Merge branch 'jc/pass-repo-to-builtins'

The convention to calling into built-in command implementation has
been updated to pass the repository, if known, together with the
prefix value.

* jc/pass-repo-to-builtins:
  add: pass in repo variable instead of global the_repository
  builtin: remove USE_THE_REPOSITORY for those without the_repository
  builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h
  builtin: add a repository parameter for builtin functions

commit.h

@@ -254,7 +254,10 @@ struct oid_array;
 struct ref;
 int for_each_commit_graft(each_commit_graft_fn, void *);
 
-int interactive_add(const char **argv, const char *prefix, int patch);
+int interactive_add(struct repository *repo,
+		    const char **argv,
+		    const char *prefix,
+		    int patch);
 
 struct commit_extra_header {
 	struct commit_extra_header *next;