Merge branch 'jk/git-connection-deadlock-fix'

* jk/git-connection-deadlock-fix:
  test core.gitproxy configuration
  send-pack: avoid deadlock on git:// push with failed pack-objects
  connect: let callers know if connection is a socket
  connect: treat generic proxy processes like ssh processes

Conflicts:
	connect.c

builtin/send-pack.c

@@ -344,6 +344,8 @@ int send_pack(struct send_pack_args *args,
 				ref->status = REF_STATUS_NONE;
 			if (args->stateless_rpc)
 				close(out);
+			if (git_connection_is_socket(conn))
+				shutdown(fd[0], SHUT_WR);
 			if (use_sideband)
 				finish_async(&demux);
 			return -1;