* next part of exchange window

* changed some CDefHandlers to CDefEssential (the second is less memory consuming)
* minor changes

hch/CBuildingHandler.cpp

@@ -27,7 +27,7 @@ static unsigned int readNr(std::string &in, int &it)
 	if(last==in.size())
 		throw std::string("Cannot read number...");
 
-	std::stringstream ss(in.substr(it,last-it));
+	std::istringstream ss(in.substr(it,last-it));
 	it+=(1+last-it);
 	ss >> last;
 	return last;
@@ -127,7 +127,7 @@ void CBuildingHandler::loadBuildings()
 				while(it<seppos)
 				{
 					int last = linia.find_first_of(' ',it);
-					std::stringstream ss(linia.substr(it,last-it));
+					std::istringstream ss(linia.substr(it,last-it));
 					it = last + 1;
 					ss >> last;
 					(hall[tid].second)[j][box].push_back(last);

hch/CDefObjInfoHandler.h

@@ -14,7 +14,7 @@
  *
  */
 
-class CDefHandler;
+class CDefEssential;
 class CLodHandler;
 class DLL_EXPORT CGDefInfo
 {
@@ -30,7 +30,7 @@ public:
 		 terrainMenu; //in which menus in map editor object will be showed
 	si32 width, height; //tiles
 	si32 type; //(0- ground, 1- towns, 2-creatures, 3- heroes, 4-artifacts, 5- resources)   
-	CDefHandler * handler;
+	CDefEssential * handler;
 	si32 printPriority;
 	bool isVisitable();
 	bool operator<(const CGDefInfo& por)

hch/CMusicHandler.cpp

@@ -158,7 +158,7 @@ void CSoundHandler::initCreaturesSounds(std::vector<CCreature> &creatures)
 	{
 		std::string cname="", attack="", defend="", killed="", move="", 
 			shoot="", wince="", ext1="", ext2="";
-		std::stringstream str(line);
+		std::istringstream str(line);
 
 		str >> cname >> attack >> defend >> killed >> move >> shoot >> wince >> ext1 >> ext2;
 
@@ -232,7 +232,7 @@ void CSoundHandler::initSpellsSounds(std::vector<CSpell> &spells)
 	{
 		int spellid;
 		std::string soundfile="";
-		std::stringstream str(line);
+		std::istringstream str(line);
 
 		str >> spellid >> soundfile;