Merge branch 'sk/force-if-includes'

"git push --force-with-lease[=<ref>]" can easily be misused to lose
commits unless the user takes good care of their own "git fetch".
A new option "--force-if-includes" attempts to ensure that what is
being force-pushed was created after examining the commit at the
tip of the remote ref that is about to be force-replaced.

* sk/force-if-includes:
  t, doc: update tests, reference for "--force-if-includes"
  push: parse and set flag for "--force-if-includes"
  push: add reflog check for "--force-if-includes"

send-pack.c

@@ -299,6 +299,7 @@ static int check_to_send_update(const struct ref *ref, const struct send_pack_ar
 	case REF_STATUS_REJECT_FETCH_FIRST:
 	case REF_STATUS_REJECT_NEEDS_FORCE:
 	case REF_STATUS_REJECT_STALE:
+	case REF_STATUS_REJECT_REMOTE_UPDATED:
 	case REF_STATUS_REJECT_NODELETE:
 		return CHECK_REF_STATUS_REJECTED;
 	case REF_STATUS_UPTODATE: