Merge pull request #2838 from dumganhar/master

[Android] SimpleGame doesn't depend on extension now.
issue #2271: fixed memory leak of CCControlColorPicker
issue #2271: fixed memory leak of WebSocket
Merge branch 'master' of https://github.com/cocos2d/cocos2d-x
issue #2271: fixed memory leak of CCTextureCache::snapshotTextures()
Merge pull request #2839 from minggo/master

fix some memory leak
[Android] Don't use c++11 feature in OpenSLEngine.cpp.