* lib/groupio.c, lib/groupio.h, lib/pwio.c, lib/pwio.h,

lib/sgroupio.c, lib/sgroupio.h, lib/shadowio.c, lib/shadowio.h:
	Added *_dbname() functions to retrieve the name of the databases.
	* lib/groupio.c, lib/groupio.h, lib/pwio.c, lib/pwio.h,
	lib/sgroupio.c, lib/sgroupio.h, lib/shadowio.c, lib/shadowio.h:
	*_name() functions renamed *setname().
	* src/grpck.c, src/pwck.c: Likewise.
	* lib/groupio.h, lib/pwio.h, lib/sgroupio.h, lib/shadowio.h: Added
	the name of the arguments to the prototypes.
	* src/chage, src/chfn.c, src/chgpasswd.c, src/chpasswd.c,
	src/chsh.c, src/gpasswd.c, src/groupadd.c, src/groupdel.c,
	src/groupmod.c, src/grpck.c, src/grpconv.c, src/grpunconv.c,
	src/newusers.c, src/passwd.c, src/pwck.c, src/pwconv.c,
	src/pwunconv.c, src/useradd.c, src/userdel.c, src/usermod.c:
	Harmonize the erro & syslog messages in case of failure of the
	*_lock(), *_open(), *_close(), *_unlock(), *_remove() functions.
	* src/chgpasswd.c, src/chpasswd.c, src/usermod.c: Avoid
	capitalized messages.
	* src/chpasswd.c, src/useradd.c, src/usermod.c: Harmonize messages
	in case of inexistent entries.
	* src/usermod.c:  Harmonize messages in case of already existing
	entries.
	* src/newusers.c, src/useradd.c: Simplify PAM error handling.
	* src/useradd.c: Report failures to unlock files (stderr, syslog,
	and audit). But do not fail (continue).
	* src/useradd.c (open_files): Do not report to syslog & audit
	failures to lock or open the databases. This might be harmless,
	and the logs were not already informed that a change was
	requested.
	* src/usermod.c: It's not the account which is unlocked, but its
	password.

lib/groupio.c

@@ -126,11 +126,16 @@ static struct commonio_db group_db = {
 	false			/* readonly */
 };
 
-int gr_name (const char *filename)
+int gr_setdbname (const char *filename)
 {
 	return commonio_setname (&group_db, filename);
 }
 
+const char *gr_dbname (void)
+{
+	return group_db.filename;
+}
+
 int gr_lock (void)
 {
 	return commonio_lock (&group_db);