Hi,

Committed the attached.

This updates the avr prologue scanner and fixes a few problems.

Ted Roth

2003-06-15  Theodore A. Roth  <troth@openavr.org>

        * avr-tdep.c (avr_scan_prologue): Update comment describing the various
        prologue types.
        Properly scan prologues generated by gcc with the -mcall-prologues
        option.
        Add code to scan -mcall-prologues for mega devices.