BUG: Urge to Feed needs all vampires tapped to proceed

[MrAndyson]

IS: Urge to Feed says that you may tap any untapped vampire to put a +1/+1 counter on each of them. But in the game the player has to tap all untapped vampires she controls in order to proceed.

SHOULD BE:
Like any other "you may" card in XMage you should target the vampires to tap and then it should ask you you want to do that.

repro:
- start a match with urge to feed in your game
- you need to control at least 1 vampire
- play ureg to feed
- note the incorrect behavior

LevelX: Fixed beyond 1.4.3v1