gnulib: update

* lib/yyerror.c: Include config.h since the following stdio.h might be
from gnulib.

m4/.gitignore

@@ -48,7 +48,6 @@
 /hash.m4
 /iconv.m4
 /include_next.m4
-/inline.m4
 /intdiv0.m4
 /intl.m4
 /intldir.m4