[tomboy] gitignore: added m4 dir, automake artifact

[Alex Tereschenko <alexter src gnome org>]

commit 9a441f98db608ea38eb8c1ddb820ae7fa5c03a21
Author: Alex Tereschenko <frozen and blue gmail com>
Date:   Thu Sep 8 21:44:30 2016 +0200

    gitignore: added m4 dir, automake artifact
    
    Signed-off-by: Alex Tereschenko <frozen and blue gmail com>

 .gitignore |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 21b39dd..c88f8b6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,7 @@ Makefile.in
 /*.userprefs
 /*.usertasks
 /.vs
+/m4
 /configure
 /config.*
 /config.status