[administrivia] Update gitignore files

- Add more stuff, archive libraries, etc..
diff --git a/bgpd/.gitignore b/bgpd/.gitignore
index 122e2c5..105be22 100644
--- a/bgpd/.gitignore
+++ b/bgpd/.gitignore
@@ -10,9 +10,9 @@
 .nfs*
 *.lo
 *.la
+*.a
 *.libs
 .arch-inventory
 .arch-ids
 *~
 *.loT
-