[Coco] HDBDOS aware utils

[Willard Goosey]

I've modified my old text.bas and hexlist.bas file-viewers to be
HDB-DOS aware.

http://www.sdc.org/~goosey/coco/texthdb.bas
http://www.sdc.org/~goosey/coco/hexhdb.bas

Willard
-- 
Willard Goosey  goosey at sdc.org
Socorro, New Mexico, USA
I search my heart and find Cimmeria, land of Darkness and the Night.
  -- R.E. Howard