.gitignore: Ignore new autofoo tmp files

Change-Id: I792f5cd80bee6572ee60269ac44a12d10b5e3a5f
diff --git a/.gitignore b/.gitignore
index d3324bb..5175438 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,7 @@
 *.gcda
 *.gcno
 *.pc
+*~
 
 #configure
 aclocal.m4