- fixed memory leaks introduced in previous revision

- removed incorrect casts of MTGCardInstance into Spell objects.
- AI Test system now allows you to put decks in ai/bakaA and ai/bakaB instead of ai/baka. This allows to let AIPlayerBaka and AIPlayerBakaB play with specific decks
- Test suite speed improvement. Improved the card name cache. Test suite now runs in 850 seconds instead of 950 on my machine.
- minor code cleanup

projects/mtg/bin/Res/test/thallid.txt

@@ -1,7 +1,8 @@
 [INIT]
 UNTAP
 [PLAYER1]
-inplay:Thallid
+#1924 is thallid, we use the id to be sure to match the token in the end
+inplay:1924
 [PLAYER2]
 [DO]
 eot
@@ -13,11 +14,11 @@ eot
 next
 next
 next
-thallid
-thallid
+1924
+1924
 [ASSERT]
 FIRSTMAIN
 [PLAYER1]
-inplay:Thallid,-1924
+inplay:1924,-1924
 [PLAYER2]
 [END]