configure.ac: Use AS_LIBTOOL_TAGS. Fix crap gettext commit comment.

Original commit message from CVS:
2005-07-18  Andy Wingo  <wingo@pobox.com>

* configure.ac: Use AS_LIBTOOL_TAGS. Fix crap gettext commit
comment.

ChangeLog

+2005-07-18  Andy Wingo  <wingo@pobox.com>
+
+	* configure.ac: Use AS_LIBTOOL_TAGS. Fix crap gettext commit
+	comment.
+
 2005-07-18  Wim Taymans  <wim@fluendo.com>
 	* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_add_element),