Outdated property references cause compilation errors

[BigSauce]

I am using Cocos2d v2.1, and there are several properties in GameDevHelper API (hereby referred to as GDH API) which are outdated.

For example, GDH API references the Cocos2d property ignoreAnchorPointForPosition_ when the correct name of the property is _ignoreAnchorPointForPosition (in GHSprite.mm).

This is also true for anchorPointInPoints_ and transform_ in GHSprite.mm.

In GHDebugDrawLayer.mm, program_ should be _program.