Update CMakeLists.txt
added winrt 8.1 and wp 8.1 libs
added libtiff for winrt 8.1 and wp 8.1
deleted incorrect libs
added png and jpeg libs for winrt 8.1 and wp 8.1
added winrt and wp 8.1 dependencies
added libwebsockets and libcurl for winrt and wp 8.1
updated to latest windows 8.1 angle version
added universal app project files
updated external files for wp8 and windows 8.1 universal app
removed missing debug info for release build
Merge branch 'wp8.1' of https://github.com/MSOpenTech/cocos2d-x-3rd-party-libs-bin into wp8.1