*.[ch]: manually align parameter lists

In previous patches, extern was mechanically removed from function
declarations without care to formatting, causing parameter lists to be
misaligned. Manually format changed sections such that the parameter
lists should be realigned.

Viewing this patch with 'git diff -w' should produce no output.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

replace-object.h

@@ -17,7 +17,7 @@ void prepare_replace_object(struct repository *r);
  * lookup_replace_object().  Please do not call it directly.
  */
 const struct object_id *do_lookup_replace_object(struct repository *r,
-							const struct object_id *oid);
+						 const struct object_id *oid);
 
 /*
  * If object sha1 should be replaced, return the replacement object's