submodules: load gitmodules file from commit sha1

teach submodules to load a '.gitmodules' file from a commit sha1.  This
enables the population of the submodule_cache to be based on the state
of the '.gitmodules' file from a particular commit.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/config.c b/config.c
index 83fdecb..4d78e72 100644
--- a/config.c
+++ b/config.c
@@ -1214,10 +1214,10 @@ int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_typ
 	return do_config_from(&top, fn, data);
 }
 
-static int git_config_from_blob_sha1(config_fn_t fn,
-				     const char *name,
-				     const unsigned char *sha1,
-				     void *data)
+int git_config_from_blob_sha1(config_fn_t fn,
+			      const char *name,
+			      const unsigned char *sha1,
+			      void *data)
 {
 	enum object_type type;
 	char *buf;