* NEWS, src/gpasswd.c: Only report success to audit and syslog

	* NEWS, src/gpasswd.c: Only report success to audit and syslog
	when the changes are committed to the system. Do not log failure
	for on-memory changes to audit or syslog. Make sure failures and
	inconsistencies will be reported in case of unexpected failures
	(e.g. malloc failures). Only specify an audit message if it is not
	implicitly implied by the type argument. Removed fail_exit
	(replaced by atexit(do_cleanups)). Log failures in case of
	permission denied.