[libgee] Add more m4 scripts to .gitignore

[Rico Tzschichholz <ricotz src gnome org>]

commit 1da083512041931a9f5314690376bd07d6413cdd
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Apr 1 11:54:40 2019 +0200

    Add more m4 scripts to .gitignore

 .gitignore | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/.gitignore b/.gitignore
index 033690f..7078db1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,11 +26,15 @@ compile
 stamp-h1
 *.pc
 lcov.info
+m4/ax_require_defined.m4
+m4/introspection.m4
 m4/libtool.m4
 m4/ltoptions.m4
 m4/ltsugar.m4
 m4/ltversion.m4
 m4/lt~obsolete.m4
+m4/pkg.m4
+m4/vala.m4
 doc/gee-0.8
 gee/gee-0.8.vapi
 gee/gee-internals-0.8.vapi