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/ModIconRow.cpp

@@ -27,7 +27,7 @@ ModIconRow::~ModIconRow()
 {
 	for (ModIcon *p : m_vpModIcon)
 	{
-		SAFE_DELETE( p );
+		RageUtil::SafeDelete( p );
 	}
 	this->RemoveAllChildren();
 }