libc: introduce "jehanne_" namespace

With this commit all functions declared in libc.h have been renamed
with the "jehanne_" prefix. This is done for several reason:

- it removes conflicts during symbol resolution when linking
  standard C libraries like newlib or musl
- it allows programs depending on a standard C library to directly
  link to a library depending on our non standard libc (eg libsec).

To ease transiction two files are provided:

- sys/include/lib9.h that can be included instead of <libc.h> to use
  the old names (via a simple set of macros)
- sys/src/lib/c/lib9.c that can be compiled with a program where the
  macro provided by lib9.h are too dumb (see for example rc or grep).

In the kernel port/lib.h has been modified accordingly and some of
the functions it directly provides has been renamed too (eg malloc
in qmalloc.c and print in devcons.c).

sys/include/lib9.h

@@ -0,0 +1,310 @@
+/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * Jehanne is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* lib9.h provides macros to map Plan9's libc functions to Jehanne one */
+
+#include <libc.h>
+
+#define memccpy jehanne_memccpy
+#define memset jehanne_memset
+#define memcmp jehanne_memcmp
+#define memcpy jehanne_memcpy
+#define memmove jehanne_memmove
+#define memchr jehanne_memchr
+#define strcat jehanne_strcat
+#define strchr jehanne_strchr
+#define strcmp jehanne_strcmp
+#define strcpy jehanne_strcpy
+#define strecpy jehanne_strecpy
+#define strdup jehanne_strdup
+#define strncat jehanne_strncat
+#define strncpy jehanne_strncpy
+#define strncmp jehanne_strncmp
+#define strpbrk jehanne_strpbrk
+#define strrchr jehanne_strrchr
+#define strtok jehanne_strtok
+#define strlen jehanne_strlen
+#define strspn jehanne_strspn
+#define strcspn jehanne_strcspn
+#define strstr jehanne_strstr
+#define cistrncmp jehanne_cistrncmp
+#define cistrcmp jehanne_cistrcmp
+#define cistrstr jehanne_cistrstr
+#define tokenize jehanne_tokenize
+#define runetochar jehanne_runetochar
+#define chartorune jehanne_chartorune
+#define runelen jehanne_runelen
+#define runenlen jehanne_runenlen
+#define fullrune jehanne_fullrune
+#define utflen jehanne_utflen
+#define utfnlen jehanne_utfnlen
+#define utfrune jehanne_utfrune
+#define utfrrune jehanne_utfrrune
+#define utfutf jehanne_utfutf
+#define utfecpy jehanne_utfecpy
+#define runestrcat jehanne_runestrcat
+#define runestrchr jehanne_runestrchr
+#define runestrcmp jehanne_runestrcmp
+#define runestrcpy jehanne_runestrcpy
+#define runestrncpy jehanne_runestrncpy
+#define runestrecpy jehanne_runestrecpy
+#define runestrdup jehanne_runestrdup
+#define runestrncat jehanne_runestrncat
+#define runestrncmp jehanne_runestrncmp
+#define runestrrchr jehanne_runestrrchr
+#define runestrlen jehanne_runestrlen
+#define runestrstr jehanne_runestrstr
+#define tolowerrune jehanne_tolowerrune
+#define totitlerune jehanne_totitlerune
+#define toupperrune jehanne_toupperrune
+#define tobaserune jehanne_tobaserune
+#define isalpharune jehanne_isalpharune
+#define isbaserune jehanne_isbaserune
+#define isdigitrune jehanne_isdigitrune
+#define islowerrune jehanne_islowerrune
+#define isspacerune jehanne_isspacerune
+#define istitlerune jehanne_istitlerune
+#define isupperrune jehanne_isupperrune
+#define malloc jehanne_malloc
+#define malloc jehanne_malloc
+#define mallocz jehanne_mallocz
+#define free jehanne_free
+#define msize jehanne_msize
+#define mallocalign jehanne_mallocalign
+#define calloc jehanne_calloc
+#define realloc jehanne_realloc
+#define setmalloctag jehanne_setmalloctag
+#define setrealloctag jehanne_setrealloctag
+#define getmalloctag jehanne_getmalloctag
+#define getrealloctag jehanne_getrealloctag
+#define malloctopoolblock jehanne_malloctopoolblock
+#define print jehanne_print
+#define print jehanne_print
+#define seprint jehanne_seprint
+#define vseprint jehanne_vseprint
+#define snprint jehanne_snprint
+#define vsnprint jehanne_vsnprint
+#define smprint jehanne_smprint
+#define vsmprint jehanne_vsmprint
+#define sprint jehanne_sprint
+#define fprint jehanne_fprint
+#define vfprint jehanne_vfprint
+#define runesprint jehanne_runesprint
+#define runesnprint jehanne_runesnprint
+#define runevsnprint jehanne_runevsnprint
+#define runeseprint jehanne_runeseprint
+#define runevseprint jehanne_runevseprint
+#define runesmprint jehanne_runesmprint
+#define runevsmprint jehanne_runevsmprint
+#define fmtfdinit jehanne_fmtfdinit
+#define fmtfdflush jehanne_fmtfdflush
+#define fmtstrinit jehanne_fmtstrinit
+#define fmtstrflush jehanne_fmtstrflush
+#define runefmtstrinit jehanne_runefmtstrinit
+#define runefmtstrflush jehanne_runefmtstrflush
+#define fmtinstall jehanne_fmtinstall
+#define dofmt jehanne_dofmt
+#define dorfmt jehanne_dorfmt
+#define fmtprint jehanne_fmtprint
+#define fmtvprint jehanne_fmtvprint
+#define fmtrune jehanne_fmtrune
+#define fmtstrcpy jehanne_fmtstrcpy
+#define fmtrunestrcpy jehanne_fmtrunestrcpy
+#define errfmt jehanne_errfmt
+#define unquotestrdup jehanne_unquotestrdup
+#define unquoterunestrdup jehanne_unquoterunestrdup
+#define quotestrdup jehanne_quotestrdup
+#define quoterunestrdup jehanne_quoterunestrdup
+#define quotestrfmt jehanne_quotestrfmt
+#define quoterunestrfmt jehanne_quoterunestrfmt
+#define quotefmtinstall jehanne_quotefmtinstall
+#define needsrcquote jehanne_needsrcquote
+#define srand jehanne_srand
+#define rand jehanne_rand
+#define nrand jehanne_nrand
+#define lrand jehanne_lrand
+#define lnrand jehanne_lnrand
+#define frand jehanne_frand
+#define truerand jehanne_truerand
+#define ntruerand jehanne_ntruerand
+#define getfcr jehanne_getfcr
+#define setfsr jehanne_setfsr
+#define setfcr jehanne_setfcr
+#define NaN jehanne_NaN
+#define Inf jehanne_Inf
+#define isNaN jehanne_isNaN
+#define isInf jehanne_isInf
+#define umuldiv jehanne_umuldiv
+#define muldiv jehanne_muldiv
+#define pow jehanne_pow
+#define atan2 jehanne_atan2
+#define fabs jehanne_fabs
+#define atan jehanne_atan
+#define log jehanne_log
+#define log10 jehanne_log10
+#define exp jehanne_exp
+#define floor jehanne_floor
+#define ceil jehanne_ceil
+#define hypot jehanne_hypot
+#define sin jehanne_sin
+#define cos jehanne_cos
+#define tan jehanne_tan
+#define asin jehanne_asin
+#define acos jehanne_acos
+#define sinh jehanne_sinh
+#define cosh jehanne_cosh
+#define tanh jehanne_tanh
+#define sqrt jehanne_sqrt
+#define fmod jehanne_fmod
+#define gmtime jehanne_gmtime
+#define localtime jehanne_localtime
+#define asctime jehanne_asctime
+#define ctime jehanne_ctime
+#define cputime jehanne_cputime
+#define times jehanne_times
+#define tm2sec jehanne_tm2sec
+#define nsec jehanne_nsec
+#define _assert jehanne__assert
+#define abs jehanne_abs
+#define atexit jehanne_atexit
+#define atexitdont jehanne_atexitdont
+#define atnotify jehanne_atnotify
+#define atof jehanne_atof
+#define atoi jehanne_atoi
+#define atol jehanne_atol
+#define atoll jehanne_atoll
+#define charstod jehanne_charstod
+#define chdir jehanne_chdir
+#define cleanname jehanne_cleanname
+#define dec64 jehanne_dec64
+#define enc64 jehanne_enc64
+#define dec32 jehanne_dec32
+#define enc32 jehanne_enc32
+#define dec16 jehanne_dec16
+#define enc16 jehanne_enc16
+#define encodefmt jehanne_encodefmt
+#define exits jehanne_exits
+#define frexp jehanne_frexp
+#define getcallerpc jehanne_getcallerpc
+#define getenv jehanne_getenv
+#define getfields jehanne_getfields
+#define gettokens jehanne_gettokens
+#define getuser jehanne_getuser
+#define getwd jehanne_getwd
+#define iounit jehanne_iounit
+#define labs jehanne_labs
+#define ldexp jehanne_ldexp
+#define longjmp jehanne_longjmp
+#define mktemp jehanne_mktemp
+#define modf jehanne_modf
+#define notejmp jehanne_notejmp
+#define nsec jehanne_nsec
+#define dup jehanne_dup
+#define ocreate jehanne_ocreate
+#define perror jehanne_perror
+#define pipe jehanne_pipe
+#define postnote jehanne_postnote
+#define pow10 jehanne_pow10
+#define putenv jehanne_putenv
+#define qsort jehanne_qsort
+#define bsearch jehanne_bsearch
+#define setjmp jehanne_setjmp
+#define strtod jehanne_strtod
+#define strtol jehanne_strtol
+#define strtoul jehanne_strtoul
+#define strtoll jehanne_strtoll
+#define strtoull jehanne_strtoull
+#define sysfatal jehanne_sysfatal
+#define syslog jehanne_syslog
+#define time jehanne_time
+#define tolower jehanne_tolower
+#define toupper jehanne_toupper
+#define ainc jehanne_ainc
+#define adec jehanne_adec
+#define _tas jehanne__tas
+#define lock jehanne_lock
+#define lockt jehanne_lockt
+#define unlock jehanne_unlock
+#define canlock jehanne_canlock
+#define lock; jehanne_lock;
+#define qlock jehanne_qlock
+#define qlockt jehanne_qlockt
+#define qunlock jehanne_qunlock
+#define canqlock jehanne_canqlock
+#define _qlockinit jehanne__qlockinit
+#define lock; jehanne_lock;
+#define rlock jehanne_rlock
+#define rlockt jehanne_rlockt
+#define runlock jehanne_runlock
+#define canrlock jehanne_canrlock
+#define wlock jehanne_wlock
+#define wlockt jehanne_wlockt
+#define wunlock jehanne_wunlock
+#define canwlock jehanne_canwlock
+#define rsleep jehanne_rsleep
+#define rsleept jehanne_rsleept
+#define rwakeup jehanne_rwakeup
+#define rwakeupall jehanne_rwakeupall
+#define privalloc jehanne_privalloc
+#define accept jehanne_accept
+#define announce jehanne_announce
+#define dial jehanne_dial
+#define setnetmtpt jehanne_setnetmtpt
+#define hangup jehanne_hangup
+#define listen jehanne_listen
+#define netmkaddr jehanne_netmkaddr
+#define reject jehanne_reject
+#define pushssl jehanne_pushssl
+#define pushtls jehanne_pushtls
+#define getnetconninfo jehanne_getnetconninfo
+#define freenetconninfo jehanne_freenetconninfo
+#define access jehanne_access
+#define awakened jehanne_awakened
+#define brk jehanne_brk
+#define execl jehanne_execl
+#define forgivewkp jehanne_forgivewkp
+#define fork jehanne_fork
+#define readn jehanne_readn
+#define segbrk jehanne_segbrk
+#define segbrk jehanne_segbrk
+#define segattach jehanne_segattach
+#define segdetach jehanne_segdetach
+#define segfree jehanne_segfree
+#define sleep jehanne_sleep
+#define stat jehanne_stat
+#define wait jehanne_wait
+#define waitpid jehanne_waitpid
+#define wstat jehanne_wstat
+#define dirstat jehanne_dirstat
+#define dirfstat jehanne_dirfstat
+#define dirwstat jehanne_dirwstat
+#define dirfwstat jehanne_dirfwstat
+#define dirread jehanne_dirread
+#define nulldir jehanne_nulldir
+#define dirreadall jehanne_dirreadall
+#define getpid jehanne_getpid
+#define getppid jehanne_getppid
+#define getmainpid jehanne_getmainpid
+#define rerrstr jehanne_rerrstr
+#define sysname jehanne_sysname
+#define werrstr jehanne_werrstr
+#define convM2D jehanne_convM2D
+#define convD2M jehanne_convD2M
+#define sizeD2M jehanne_sizeD2M
+#define dirmodefmt jehanne_dirmodefmt
+#define chartorune jehanne_chartorune