cocos2d/cocos2d-x — pull request #5374 by justmao945 (2014-02-17 13:26:21+00:00)
Title: fix string concatenation

`set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-std=c++11")` which leads to list of strings.
The result is "-stdlib=libc++;-std=c++11" if CMAKE_CXX_FLAGS is defined as "-stdlib=libc++"