liq| er|: regression testing with ER sdk r647. blinn_transparent and simple_procedural fail.
liq| er| test|: avoid degenerated triangle
liq| rm|: move "#define RIBLIB_AQSIS" from liqConfig.h to ri_interface.h
liq|: remove liqConfig.h, remove _USE_RENDERMAN_/_USE_ELVISHRAY_/_USE_APPLESEED_