Throughout use strace class in place of individual functions and variables.

* cygwin.din: Eliminate _strace_wm.
* sigproc.cc (wait_sig): Temporarily add more debugging output.
* include/cygwin/version.h: Bump minor api to reflect export change.

winsup/cygwin/localtime.c

@@ -7,9 +7,6 @@
 /* CYGNUS LOCAL */
 #define lint
 #include <windows.h>
-#include <sys/strace.h>
-
-extern DWORD strace_active;
 
 #define USG_COMPAT