Merge pull request #32 from pandamicro/AssetManager

Request to merge new AssetsManager and its test cases
fixed shader compiler after cocos refactor
added missing pch files for WP8
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into wp8-v3-fix
updated precompiled shaders for wp8
updated pch file for wp8
updated link() for wp8
Merge pull request #33 from pandamicro/AssetManager

Additional commits for AssetsManager
Merge pull request #34 from pandamicro/AssetManager

Improve AssetsManager logic stability
issue #5277:Label:It could be possible that for using outline and invoking 'Director::setContentScaleFactor' cause label show nothing.
Merge pull request #6857 from Dhilan007/v3_labelfix

issue #5277:Label:It could be possible that for using outline and invoking 'Director::setContentScaleFactor' cause label show nothing.
Merge pull request #6854 from MSOpenTech/wp8-v3-fix

Wp8 v3 fix for precompiled shaders and precompiled headers
[ci skip]
issue #5183, fix Layout visit issue
Merge pull request #6859 from andyque/fixLayoutVisit

issue #5183, fix Layout visit issue
[AUTO][ci skip]: updating cocos2dx_files.json
closed #4944: fixed bug: physics engine crashes occasionally when remove bodies at physics contact callback.
Merge pull request #6860 from CocosRobot/update_cocosfiles_1400657115

[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #6861 from boyu0/bug4944_physics_crash

closed #4944: fixed bug: physics engine crashes occasionally when remove...
[ci skip]