Crew Ability Cost & Crewbonus

Revised cards to use {crew(targetchooser)} (modified taptargetcost) so
it can use crewbonus ability from other creatures.

projects/mtg/src/CardPrimitive.cpp

@@ -58,6 +58,7 @@ CardPrimitive::CardPrimitive(CardPrimitive * source)
 
     setdoubleFaced(source->doubleFaced);
     setAICustomCode(source->AICustomCode);
+    setCrewAbility(source->CrewAbility);
     power = source->power;
     toughness = source->toughness;
     restrictions = source->restrictions ? source->restrictions->clone() : NULL;
@@ -353,6 +354,17 @@ const string& CardPrimitive::getAICustomCode() const
     return AICustomCode;
 }
 
+void CardPrimitive::setCrewAbility(const string& value)
+{
+    std::transform(CrewAbility.begin(), CrewAbility.end(), CrewAbility.begin(), ::tolower);
+    CrewAbility = value;
+}
+
+const string& CardPrimitive::getCrewAbility() const
+{
+    return CrewAbility;
+}
+
 void CardPrimitive::setName(const string& value)
 {
     name = value;