Replace SAFE_DELETE / SAFE_DELETE_ARRAY macros

SAFE_DELETE -> RageUtil::SafeDelete
SAFE_DELETE_ARRAY -> RageUtil::SafeDeleteArray

Update JsonUtil.h to include RageUtil.h - MSVC doesn't need it included for some reason, but GCC and XCode does.

src/ScreenWithMenuElements.cpp

@@ -161,11 +161,11 @@ void ScreenWithMenuElements::HandleScreenMessage( const ScreenMessage SM )
 
 ScreenWithMenuElements::~ScreenWithMenuElements()
 {
-	SAFE_DELETE( m_MenuTimer );
+	RageUtil::SafeDelete( m_MenuTimer );
 	FOREACH_PlayerNumber( p )
 	{
 		if( m_MemoryCardDisplay[p] != nullptr )
-			SAFE_DELETE( m_MemoryCardDisplay[p] );
+			RageUtil::SafeDelete( m_MemoryCardDisplay[p] );
 	}
 	for (Actor *actor : m_vDecorations)
 		delete actor;