NOTE: Does not compile!
This is to allow CFF functions moved to `psaux' to call functions declared in src/cff/cffload.h.
* include/freetype/internal/services/svcfftl.h: Create new FT_Service_CFFLoad service.
* include/freetype/internal/ftserv.h: Added new macro FT_DEFINE_SERVICEDESCREC10.
Added define for new service header.
* src/cff/cffdrivr.c, src/cff/cffpic.h: Register the new service.
* src/cff/cfftypes.h (CFF_FontRec), src/psaux/cf2font.h (CF2_FontRec): Add service interface.
* src/cff/cffobjs.c, src/psaux/cf2font.c, src/psaux/cf2ft.c, src/psaux/cf2intrp.c, src/psaux/cffdecode.c: Use the new service.