[administrivia] Git should ignore backup files and .loT files
diff --git a/m4/.gitignore b/m4/.gitignore
index 2f02fdb..3f3bd0a 100644
--- a/m4/.gitignore
+++ b/m4/.gitignore
@@ -2,3 +2,6 @@
 Makefile.in
 .arch-inventory
 .arch-ids
+*~
+*.loT
+