gitignore: tests/package.m4

Change-Id: Ida4a61d4786d7db63dc59a641f44afb2ec2edd97
diff --git a/.gitignore b/.gitignore
index 2e78dfa..72f11a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@
 libtool
 ltmain.sh
 m4
+*.m4
 missing
 .deps