[Xcb] [PATCH util-common] config: ignore m4 files from libtool.

[Gaetan Nadon]

The list is taken from the defaults for xorg which have been
stable for the last two years.

This patch depends on a xcb/util patch as the subproject commit is changed.

Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
---
 .gitignore |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/.gitignore b/.gitignore
index 2e95eba..01220ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
-# Ignore all the m4 files which might be created by autogen.sh
-*.m4
-!ax_compare_version.m4
-!xcb_util_common.m4
-!xcb_util_m4_with_include_path.m4
+# Ignore all the m4 files which might be created by libtool
+libtool.m4
+lt~obsolete.m4
+ltoptions.m4
+ltsugar.m4
+ltversion.m4
-- 
1.6.0.4