xxtea had wrong include
adding xxtea as static lib for cocos
Merge branch 'xxtea' into xxtea_build

Conflicts:
	CMakeLists.txt
Merge branch 'xxtea_build' into asmo_v3_dragonfall
Merge branch 'asmo_v3_dragonfall' of git://github.com/asmodehn/cocos2d-x into asmo_v3_dragonfall
fixing cmake build when used in Wkcocos