support 10 points touch on iOS
fix save path
support start/end opacity on Layout
add texturepath getter
(+)Invoking PackingUtil with FileUtils in cocos, add virtual file mode to load resource from file package
add texturepath getter
(*)对接PackingUtil的IsFileExist()
Compatibility with Windows XP
Change getWritablePath to always return exe folder in Windows.
Fix string encoding and path separator.
Fix crash on image load failure.
Fix crash on glfwCreateWindow failure.
Win32 FPS control method: no sync attempt.
Limit sleep time estimation input to <(1/64)s
Win32 FPS control method: loosely sync.
BMP support (non-compressed BPM only)
Convert filename to UTF-16 in Image::saveImageTo* on win32.
CCUserDefault: convert filename to UTF-16 on win32
Cache writable path in CCFileUtilsWin32 (assume that it doesn't change)
(somewhat) better macro for snprintf on MSVC