added ClippingRegionNode
standardized codes
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Feature #4977: Fix an issue about checkUpdate function
use shader without light by default
create animate by frame section.
add a param comment
modified project files and make files
restored cocos/CMakeList.txt
ClippingRegionNode --> ClippingRectangleNode
modify Animate3D::create
Merge pull request #138 from lvlonggame/v3

add create Animate3D interface by frame section
fix mesh AABB incorrect calculation through using static variable
Fixing bug
fix mesh's AABB calculation incorrect by using static variable
Merge pull request #140 from tangziwen/v3

fix mesh AABB incorrect calculation through using static variable
Merge branch 'newcode' into v3
add comment
fixed BillBoard
Added New Test case
Merge pull request #141 from songchengjiang/fixbillboard

Fixed billboard