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/ModelManager.cpp

@@ -21,7 +21,7 @@ ModelManager::~ModelManager()
 		RageModelGeometry* pGeom = i->second;
 		if( pGeom->m_iRefCount )
 			LOG->Trace( "MODELMAN LEAK: '%s', RefCount = %d.", i->first.c_str(), pGeom->m_iRefCount );
-		SAFE_DELETE( pGeom );
+		RageUtil::SafeDelete( pGeom );
 	}
 }
 
@@ -65,7 +65,7 @@ void ModelManager::UnloadModel( RageModelGeometry *m )
 			else
 			{
 				m_mapFileToGeometry.erase( i );	// remove map entry
-				SAFE_DELETE( m );	// free the texture
+				RageUtil::SafeDelete( m );	// free the texture
 				return;
 			}
 		}