Make `FT_Get_CMap_Language_ID' work with CFF. Bug reported by Steve Hartwell <shspamsink@comcast.net>. * src/cff/cffdrivr.c: Include FT_SERVICE_TT_CMAP_H. (cff_services): Added an entry for FT_SERVICE_ID_TT_CMAP. (cff_get_cmap_info): New function. (cff_service_get_cmap_info) New entry for cff_services. * src/sfnt/ttcmap0.c: Exit loop after a format match has been found. Suggested by Steve Hartwell <shspamsink@comcast.net>.