cmd/ursrv: Recognize new-style dev versions
cmd/ursrv: Recognize new-style dev versions

wweich/syncthing,imsodin/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing,imsodin/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing,imsodin/syncthing,syncthing/syncthing,syncthing/syncthing,imsodin/syncthing,wweich/syncthing,imsodin/syncthing