* mn10300-prologue.c: New file. Prologue analysis.
* mn10300-tdep.c: Move REGNUM values to mn10300-tdep.h.
(mn10300_frame_unwind_cache): Don't call trad_frame_set_id
until after analyze_prologue, and don't call trad_frame_set_base
at all (let analyze_prologue do it).
* mn10300-tdep.c: New file. This is a re-implementation of
the mn10300 target back-end using the new frame api etc.
* mn10300-tdep.h: New file.
* config/mn10300/mn10300.mt: New file (or replace old file).
* configure.tgt: Add mn10300 target.
