Fix the COMMENT to tell this is GCC 4.x rather than 3.x. Pointed out
by Simon Barner.
Revert the default debugging format to stabs but offer DWARF-2 as an
option (rather than being the default). AVR-GDB currently understands
stabs much better than DWARF-2.
Fix a bug in patch-zz-atmega256x that caused -fcall-prologues to
generate faulty code. This affected libgcc.a as it uses this option.
This bug has been originally found and fixed by Wang Guohui but I
missed his fix when adding the patch here.
Update to GCC 4.1.1.
Add Björn Haase's (beta) patch for ATmega256x support, backported
to GCC 4.1.1 by Bernhard Trog.
Add Anatoly Sokolov's patch to support __attribute__((alias)).