disable new/mallloc override on non-windows platforms( #299 )

wscript

@@ -239,6 +239,10 @@ def define_platform(conf):
 			'_DLL_EXT=.so'
 		])
 
+	if conf.env.DEST_OS != 'win32':
+		conf.define('NO_MALLOC_OVERRIDE', 1)
+		conf.define('NO_MEMOVERRIDE_NEW_DELETE', 1)
+
 	if conf.options.DEBUG_ENGINE:
 		conf.env.append_unique('DEFINES', [
 			'DEBUG', '_DEBUG'