Add extra files to MANIFEST.in

These are needed for building the rpm distribution.

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>
diff --git a/MANIFEST.in b/MANIFEST.in
index 5668fdf..c720022 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,5 +2,7 @@
 include stg-prof
 include templates/*.tmpl
 include examples/*.tmpl
-include examples/stgitrc
+include examples/gitconfig
 include contrib/diffcol.sh
+include contrib/stgbashprompt.sh
+include contrib/stgit-completion.bash