[administrivia] Update gitignore files

- Add more stuff, archive libraries, etc..
diff --git a/isisd/.gitignore b/isisd/.gitignore
index 21b4e69..5e8028c 100644
--- a/isisd/.gitignore
+++ b/isisd/.gitignore
@@ -12,4 +12,4 @@
 .arch-ids
 *~
 *.loT
-
+*.a