http-push: improve remote lock management
http-push: improve remote lock management

Associate the remote locks with the remote repo, add a function to check
and refresh all current locks.

Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git