added countertrack(counterstring) MTGAbility

what this does currently is remove a counter of the type counterstring and when the ability is destroyed it puts the counter back for us.
meant for weapons used as follows.
auto=teach(creature) countertrack(0/0,1,hand)

when the creature is equipped with this weapon it will remove a hand counter from the creature, when you remove the weapon, or the weapon is destroyed or whatever...it will put a hand counter back on the creature.

added dualwielding thisdescriptor...
auto=this(dualwielding) 2/2
auto=this(dualwielding) firststrike

enabled "restriction{" on phasebased triggers @next and @each...

i will work more on countertrack to extend it to domains if it currently isnt possible to use it in this case(haven't tested it on domains)....

projects/mtg/include/AllAbilities.h

@@ -2271,7 +2271,8 @@ public:
     {
         if (skills.find(card) != skills.end())
         {
-            game->removeObserver(skills[card]);
+            if(!game->removeObserver(skills[card]))
+                skills[card]->destroy();
             skills.erase(card);
         }
         return 1;
@@ -3538,6 +3539,18 @@ public:
     ACounterShroud * clone() const;
     ~ACounterShroud();
 };
+//track an effect using counters.
+class ACounterTracker: public MTGAbility
+{
+public:
+    Counter * counter;
+    int removed;
+    ACounterTracker(int id, MTGCardInstance * source, MTGCardInstance * target, Counter * counter = NULL);
+    int addToGame();
+    int destroy();
+    ACounterTracker * clone() const;
+    ~ACounterTracker();
+};
 //Remove all abilities from target
 class ALoseAbilities: public MTGAbility
 {

projects/mtg/include/MTGCardInstance.h

@@ -91,6 +91,7 @@ public:
     int fresh;
     int MaxLevelUp;
     int kicked;
+    bool isDualWielding;
     Player * lastController;
     MTGGameZone * getCurrentZone();
     MTGGameZone * previousZone;

projects/mtg/include/ThisDescriptor.h

@@ -133,6 +133,14 @@ class ThisDamaged:public ThisDescriptor{
     ThisDamaged * clone() const;
 };
 
+class ThisDualWield:public ThisDescriptor{
+ public:
+    virtual int match(MTGCardInstance * card);
+
+	ThisDualWield(int dualWield);
+    ThisDualWield * clone() const;
+};
+
 class ThisPower:public ThisDescriptor{
  public:
     virtual int match(MTGCardInstance * card);