added basic card draw replacement,

auto=replacedraw choice damage:2

auto=replacedraw choice draw:2 noreplace

notice noreplace exempts the draw from sending a draw event. draw events and drawn events are seperate events.

added dredge and it's rules.

[card]
name=Dakmor Salvage
auto=tap
auto={t}:add{b}
dredge=dredge(2)
text=Dakmor Salvage enters the battlefield tapped. -- {T}: Add {B} to your mana pool. -- Dredge 2 (If you would draw a card, instead you may put exactly two cards from the top of your library into your graveyard. If you do, return this card from your graveyard to your hand. Otherwise, draw a card.)
type=Land
[/card]

projects/mtg/include/CardPrimitive.h

@@ -66,6 +66,7 @@ public:
     int power;
     int toughness;
     int suspendedTime;
+    int dredgeAmount;
 
     vector<int>types;
     CardPrimitive();
@@ -110,7 +111,7 @@ public:
     bool isCreature();
     bool isLand();
     bool isSpell();
-
+    int dredge();
     void setPower(int _power);
     int getPower();
     void setToughness(int _toughness);