fix shadervar return type error
fix RajLog error
fix dirty value
Merge pull request #1314 from HDelbert/fix-log-error

fix RajLog error
Merge pull request #1315 from HDelbert/fix-material

fix dirty value
Merge pull request #1313 from HDelbert/fix-shaderbase-error

fix shadervar return type error
mIsFirstStart initialization

Animation.mIsFirstStart should be initialized as true
to fixed bugs like

public boolean isFirstStart() {
return mIsFirstStart;
}  always return false.

scale animation always scaled from 0.
Merge pull request #1327 from flankechen/master

mIsFirstStart initialization