Entities redesign and a few ERM features

* Made most Handlers derived from CHandlerBase and moved service API there.
* Declared existing Entity APIs.
* Added basic script context caching
* Started Lua script module
* Started Lua spell effect API
* Started script state persistence
* Started battle info callback binding
* CommitPackage removed
* Extracted spells::Caster to own header; Expanded Spell API.
* implemented !!MC:S, !!FU:E, !!FU:P, !!MA, !!VR:H, !!VR:C
* !!BU:C, !!BU:E, !!BU:G, !!BU:M implemented
* Allow use of "MC:S@varName@" to declare normal variable (technically v-variable with string key)
* Re-enabled VERM macros.
* !?GM0 added
* !?TM implemented
* Added !!MF:N
* Started !?OB, !!BM, !!HE, !!OW, !!UN
* Added basic support of w-variables
* Added support for ERM indirect variables
* Made !?FU regular trigger
* !!re (ERA loop receiver) implemented
* Fixed ERM receivers with zero args.

test/battle/CBattleInfoCallbackTest.cpp

@@ -18,6 +18,7 @@
 #include "mock/mock_BonusBearer.h"
 #include "mock/mock_battle_IBattleState.h"
 #include "mock/mock_battle_Unit.h"
+#include "mock/mock_scripting_Pool.h"
 
 using namespace battle;
 using namespace testing;
@@ -104,8 +105,12 @@ public:
 	class TestSubject : public CBattleInfoCallback
 	{
 	public:
-		TestSubject()
-			: CBattleInfoCallback()
+
+		scripting::Pool * pool;
+
+		TestSubject(scripting::Pool * p)
+			: CBattleInfoCallback(),
+			pool(p)
 		{
 		}
 
@@ -113,13 +118,27 @@ public:
 		{
 			CBattleInfoCallback::setBattle(battleInfo);
 		}
+
+		scripting::Pool * getContextPool() const override
+		{
+			return pool;
+		}
 	};
 
+	StrictMock<scripting::PoolMock> pool;
+
 	TestSubject subject;
 
 	BattleStateMock battleMock;
 	UnitsFake unitsFake;
 
+	CBattleInfoCallbackTest()
+		: pool(),
+		subject(&pool)
+	{
+
+	}
+
 	void startBattle()
 	{
 		subject.setBattle(&battleMock);