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

builtin/repack.c

@@ -1,3 +1,4 @@
+#define USE_THE_REPOSITORY_VARIABLE
 #include "builtin.h"
 #include "config.h"
 #include "dir.h"
@@ -1136,7 +1137,10 @@ static const char *find_pack_prefix(const char *packdir, const char *packtmp)
 	return pack_prefix;
 }
 
-int cmd_repack(int argc, const char **argv, const char *prefix)
+int cmd_repack(int argc,
+	       const char **argv,
+	       const char *prefix,
+	       struct repository *repo UNUSED)
 {
 	struct child_process cmd = CHILD_PROCESS_INIT;
 	struct string_list_item *item;