nine/shader: don't abort on encountering the coissue flag
nine/ff: don't use initialized local ureg_src variables
nine/ff: don't use TGSI_OPCODE_NRM
nine/device: don't set non-existent RS dirty bits in CreateSB
nine/stateblock: partially optimize D3DSBT_ALL
nine/shader: don't use TGSI_OPCODE_CND
nine/ff: don't die on CAMERASPACEREFLECTIONVECTOR
nine/stateblock: unref textures, free lights and transforms in dtor