Merge pull request #6721 from zifter/FixNodeConst

[ci skip]Getter always must be a const method.
Merge branch 'v3_wp8fix' of https://github.com/Dhilan007/cocos2d-x into v3-wp8
fix keypad test
Merge pull request #6855 from andyque/fixKeypad

[ci skip]fix keypad test
Merge pull request #6698 from Dhilan007/v3_wp8fix

[ci skip]closed issue:5020:The game still oriented in landscape mode when update the describes of orientation to Portrait in 'MainPage.xaml'.
Merge pull request #6844 from Dhilan007/v3-labelfix

closed issue#5252:Label:It could be possible that for using outline cause crash.
[ci skip]
close issue#5277:Label:It could be possible that for using outline and invoking 'Director::setContentScaleFactor' cause label show nothing.
Merge pull request #6856 from Dhilan007/v3_labelfix

close issue#5277:Label:It could be possible that for using outline and invoking 'Director::setContentScaleFactor' cause label show nothing.
[ci skip]
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 #1 from cocos2d/v3

update code
Update UILoadingBar.h doxygen comments