fix bugs - potential memory leak.

const std::string text = std::string((char*)ch,0,len); is using next
string constructor.
string (const string& str, size_t pos, size_t len = npos);
memory leak can occur while type converting char to string.

So we have to use next string constructor.
string (const char* s, size_t n);

http://www.cplusplus.com/reference/string/string/string/
add UV Animation Test & it's resource
fix resource miss
remove dummy log
trim uv_test texture's size
Merge pull request #158 from tangziwen/v3

V3
refact code style
remove space line
remove space line
Remove unneeded include in AudioEngine.h
This should fix and unify finding GLFW3 for all desktop archs.
Instead of using glfw3 on each required configuration, use it centralized way.
Add our prebuilt location to search paths, so FindGLFW3.cmake can find it also.
Fix compile errors with recent mingw.

Constify arguments to copy constuctors. Without this gcc fail to compile if classes used inside containers.
Error message is rather cryptic: " error: 'constexpr std::pair<_T1, _T2>::pair(const std::pair<_T1, _T2>&) [with _T1 = const int; _T2 = cocos2d::experimental::AudioPlayer]' declared to take const reference, but implicit declaration would take non-const"
Merge pull request #9107 from Dhilan007/v3-audio-includefix

Remove unneeded include in AudioEngine.h
Merge pull request #9115 from vovkasm/win32-audioengine-mingw-fix

Fix compile errors with recent mingw.
Merge pull request #9121 from vovkasm/cmake-fix-glfw3-find

This should fix and unify finding GLFW3 for all desktop archs.
fixes compiler warnings
Merge pull request #9124 from ricardoquesada/compiler_warnings

fixes compiler warnings
[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #9125 from CocosRobot/update_cocosfiles_1415999444

[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #9085 from jicheol-ryu/v3

fix bug - potential memory leak.