Merge branch 'jt/submodule-name-to-gitdir'

Code refactoring.

* jt/submodule-name-to-gitdir:
  submodule: extract path to submodule gitdir func

submodule.h

@@ -132,6 +132,13 @@ int push_unpushed_submodules(struct repository *r,
  */
 int submodule_to_gitdir(struct strbuf *buf, const char *submodule);
 
+/*
+ * Given a submodule name, create a path to where the submodule's gitdir lives
+ * inside of the provided repository's 'modules' directory.
+ */
+void submodule_name_to_gitdir(struct strbuf *buf, struct repository *r,
+			      const char *submodule_name);
+
 /*
  * Make sure that no submodule's git dir is nested in a sibling submodule's.
  */