* Coerce MCCS filename strings to UTF8 filename strings in file-name system calls, coerce system filenames back to MCCS codes
* Add UNICODE-TABLES so MTOUTF8STRING gets defined in right place in the loadup sequence
* ADIR: Bug fix: UNPACKFILENAME sets FATSTRINGP
* fix virtualkeyboard bug in code assignment
* Unicode canonicalizes non-SMALLP unicodes