Solve the decode error during ndk-building sometimes.

Error message: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe7 in position 37: ordinal not in range(128)

Author: zhangbin

plugins/project_compile/build_android.py

@@ -186,6 +186,8 @@ def do_ndk_build(self, ndk_build_param, build_mode):
 
         app_android_root = self.app_android_root
         cocos_root = self.cocos_root
+        reload(sys)
+        sys.setdefaultencoding('utf8')
         ndk_path = os.path.join(ndk_root, "ndk-build")
         module_paths = [os.path.join(app_android_root, path) for path in self.ndk_module_paths]