Add Lua functions:
- quad_isRenderBeforeParent()
- quad_setRenderBorder()
- quad_isRenderBorder()
- quad_setRenderCenter()
- quad_isRenderCenter()
- quad_borderAlpha()
- quad_getBorderAlpha()
- node_getShape()
- text_setAlign()

Constants: ALIGN_CENTER, ALIGN_LEFT, PATHSHAPE_RECT, PATHSHAPE_CIRCLE