Initial commit issue #123.

Added new package for tournament-style Texas Hold'em. Does not work yet.
TexasTourney now working (issue #123).

Completed preliminary work for TexasTourney game module. Changed
permissions for some classes in irccasino.texaspoker package to allow
usage in TexasTourney. Updated CasinoBot to allow usage of TexasTourney.
Updated player.txt file format to store stats for wins and tournaments
played in TexasTourney. Fixed a small bug when a force play command is
called when currentPlayer is null in all games. Removed redundant files in
irccasino.texastourney package. Changed TexasTourney to be a direct
subclass of TexasPoker. Added some new strings int strlib.txt.