Xfer: check against version variable not currentVersion

[Caball009]

There are at least 6 places where the xfer code checks against currentVersion instead of version.

1. (seems intentional considering the comment)

   GeneralsGameCode/Core/GameEngine/Source/GameLogic/System/Damage.cpp

   Lines 155 to 159 in bfa3bbf

   	// kill no matter what (old versions default to FALSE).
   	if( currentVersion >= 2 )
   	{
   	xfer->xferBool( &m_kill );
   	}

2. (also in Zero Hour)

   GeneralsGameCode/Generals/Code/GameEngine/Source/Common/System/SaveGame/GameStateMap.cpp

   Lines 311 to 316 in bfa3bbf

   	if (currentVersion >= 2)
   	{
   	// save the game mode.
   	Int gameMode = (Int)TheGameLogic->getGameMode();
   	xfer->xferInt( &gameMode);
   	}

3. (also in Zero Hour)

   GeneralsGameCode/Generals/Code/GameEngine/Source/Common/System/SaveGame/GameStateMap.cpp

   Lines 342 to 348 in bfa3bbf

   	if (currentVersion >= 2)
   	{
   	// get the game mode.
   	Int gameMode;
   	xfer->xferInt(&gameMode);
   	TheGameLogic->setGameMode((GameMode)gameMode);
   	}

4. GeneralsGameCode/GeneralsMD/Code/GameEngine/Source/GameClient/InGameUI.cpp

   Lines 468 to 471 in bfa3bbf

   	if ( currentVersion >= 3 )
   	{
   	xfer->xferBool( &swInfo->m_evaReadyPlayed );
   	}

5. GeneralsGameCode/GeneralsMD/Code/GameEngine/Source/GameClient/InGameUI.cpp

   Lines 515 to 522 in bfa3bbf

   	if ( currentVersion >= 3 )
   	{
   	xfer->xferBool( &evaReadyPlayed );
   	}
   	else
   	{
   	evaReadyPlayed = ready;
   	}

6. GeneralsGameCode/GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Behavior/CountermeasuresBehavior.cpp

   Lines 393 to 402 in bfa3bbf

   	if( currentVersion >= 2 )
   	{
   	xfer->xferSTLObjectIDVector( &m_counterMeasures );
   	xfer->xferUnsignedInt( &m_availableCountermeasures );
   	xfer->xferUnsignedInt( &m_activeCountermeasures );
   	xfer->xferUnsignedInt( &m_divertedMissiles );
   	xfer->xferUnsignedInt( &m_incomingMissiles );
   	xfer->xferUnsignedInt( &m_reactionFrame );
   	xfer->xferUnsignedInt( &m_nextVolleyFrame );
   	}

Used regex queries, may be incomplete:
(?<!const\s+)(XferVersion\s+\w+\s*=\s*\d+)
XferVersion\s+(?!(?:currentVersion|version)\b)
if.*currentVersion

(^\s*)(XferVersion\s+currentVersion) -> $1const $2