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/mock/mock_IGameInfoCallback.h

@@ -0,0 +1,36 @@
+/*
+ * mock_IGameInfoCallback.h, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+
+#pragma once
+
+#include "../../lib/CGameInfoCallback.h"
+
+class IGameInfoCallbackMock : public IGameInfoCallback
+{
+public:
+	//various
+	MOCK_CONST_METHOD1(getDate, int(Date::EDateType));
+	MOCK_CONST_METHOD2(isAllowed, bool(int32_t, int32_t));
+
+	//player
+	MOCK_CONST_METHOD1(getPlayer, const Player *(PlayerColor));
+	MOCK_CONST_METHOD0(getLocalPlayer, PlayerColor());
+
+	//hero
+	MOCK_CONST_METHOD1(getHero, const CGHeroInstance *(ObjectInstanceID));
+	MOCK_CONST_METHOD1(getHeroWithSubid, const CGHeroInstance *(int));
+
+	//objects
+	MOCK_CONST_METHOD2(getObj, const CGObjectInstance *(ObjectInstanceID, bool));
+	MOCK_CONST_METHOD2(getVisitableObjs, std::vector<const CGObjectInstance*>(int3, bool));
+};
+
+
+