* 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/utmpx.h

@@ -0,0 +1,45 @@
+/* utmpx.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 UTMPX_H
+#define UTMPX_H
+
+#include <cygwin/utmp.h>
+#include <sys/time.h>
+
+#define UTMPX_FILE _PATH_UTMP
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Must be kept in sync with struct utmp as defined in sys/utmp.h! */
+struct utmpx
+{
+ short	ut_type;	
+ pid_t	ut_pid;		
+ char	ut_line[UT_LINESIZE];
+ char   ut_id[UT_IDLEN];
+ time_t ut_time;	
+ char	ut_user[UT_NAMESIZE];	
+ char	ut_host[UT_HOSTSIZE];	
+ long	ut_addr;	
+ struct timeval ut_tv;
+};
+
+extern void endutxent (void);
+extern struct utmpx *getutxent (void);
+extern struct utmpx *getutxid (const struct utmpx *id);
+extern struct utmpx *getutxline (const struct utmpx *line);
+extern struct utmpx *pututxline (const struct utmpx *utmpx);
+extern void setutxent (void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* UTMPX_H */