* cygwin.din: Add utmpx symbols.

* syscalls.cc: Include utmpx.h.  Implement utmpx functions as stubs
	to utmp functions.
	(copy_ut_to_utx): New static function.
	(pututline): Change from void to struct utmp * as on Linux.
	(setutxent): New function.
	(endutxent): New function.
	(getutxent): New function.
	(getutxid): New function.
	(getutxline): New function.
	(pututxline): New function.
	* include/utmpx.h: New file.
	* include/cygwin/utmp.h: New file.
	* include/cygwin/version.h: Bump API minor number.
	* include/sys/utmp.h: Include cygwin/utmp.h.  Move stuff common with
	utmpx functionality there.
	(pututline): Declare struct utmp *.

winsup/cygwin/include/cygwin/utmp.h

@@ -0,0 +1,40 @@
+/* cygwin/utmp.h
+
+   Copyright 2004 Red Hat, Inc.
+
+   This software is a copyrighted work licensed under the terms of the
+   Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+   details. */
+
+#ifndef CYGWIN_UTMP_H
+#define CYGWIN_UTMP_H
+
+#include <sys/types.h>
+#include <time.h>
+#include <paths.h>
+
+#define WTMP_FILE _PATH_WTMP
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define UT_LINESIZE	16
+#define UT_NAMESIZE	16
+#define UT_HOSTSIZE	256
+#define UT_IDLEN	2
+
+#define RUN_LVL         1
+#define BOOT_TIME       2
+#define NEW_TIME        3
+#define OLD_TIME        4
+
+#define INIT_PROCESS	5
+#define LOGIN_PROCESS	6
+#define USER_PROCESS	7
+#define DEAD_PROCESS	8
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* CYGWIN_UTMP_H */