Don't use --stringtable-output - it doesn't work in gettext 0.12.1.

Reported by David Sterba <dave@jikos.cz>

autogen.sh

@@ -67,10 +67,9 @@ else
 fi
 
 # Generate po/POTFILES.in
-$XGETTEXT --keyword=_ --keyword=N_ --output=- --stringtable-output \
-	`find . -name '*.[ch]'` | \
-	sed -ne 's/^\/\* File: \([^:]*\):.*$/\1/p' | sort | \
-	uniq | grep -v 'regex.c' >po/POTFILES.in
+$XGETTEXT --keyword=_ --keyword=N_ --output=- `find . -name '*.[ch]'` | \
+	sed -ne '/^#:/{s/#://;s/:[0-9]*/\n/g;s/ //g;p;}' | \
+	grep -v '^$' | sort | uniq | grep -v 'regex.c' >po/POTFILES.in
 
 ACLOCAL_INCLUDES="-I m4"