ports/184034: [PATCH] Update games/chessx to 1.0.0 and add stagedir support

[Max Brazhnikov]

Hi,

I've made some amendments for you port:
http://people.freebsd.org/~makc/patches/chessx-1.0.0.diff

Btw, does chessx really require games/stockfish and games/crafty? If it can be 
useful without them, I suggest to disable these options by default, so that 
users who install chessx from package won't be forced to download and install 
additional packages.

Cheers,
Max