[PATCH] Possible cleanups for local-pull.c

Hi. This patch contains the following possible cleanups:

 * Make some needlessly global functions in local-pull.c static
 * Change 'char *' to 'const char *' where appropriate

Signed-off-by: Peter Hagervall <hager@cs.umu.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/sha1_file.c b/sha1_file.c
index fa37f1e..64eac59 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -487,7 +487,7 @@
 	return parse_pack_index_file(sha1, path);
 }
 
-struct packed_git *parse_pack_index_file(unsigned char *sha1, char *idx_path)
+struct packed_git *parse_pack_index_file(const unsigned char *sha1, char *idx_path)
 {
 	struct packed_git *p;
 	unsigned long idx_size;