issue #2771: add PhysicsWorld function set/getUpdateRate and set/getSpeed. Change name PhysicsQueryRectCallbackFunc and PhysicsPointQueryCallbackFunc to PhysicsRectQueryCallbackFunc and PhysicsQueryPointCallbackFunc
issue #2771: add and change some physics API, and add more documents
fix CCImage bug on android platform.
- android.graphics.Bitmap bytes are aleady RGBA
- delete swapAlphaChannel and swapAlpha
Merge pull request #4486 from boyu0/iss2771_physical

[ci skip]issue #2771: physical
Adds conversions for ssize_t.
Skips Texture2D::getPixelFormatInfoMap
Updates Bindings-generator.
Uses reinterpret_cast instead of static_cast for jsval_to_ssize and luaval_to_ssize.
Removes FileUtils::getFileData binding.
Merge pull request #4490 from dumganhar/bind-ssize_t

[scripting] Adds conversions for ssize_t.
Merge pull request #4489 from pyrasis/android_shadowstroke

fix CCImage bug on android platform.
[AUTO] : updating submodule reference to latest autogenerated bindings
Merge pull request #4494 from CocosRobot/updategeneratedsubmodule_1387175807

[AUTO] : updating submodule reference to latest autogenerated bindings