apply patch to avr-gdb to be able to debug on assembler level

Hi,

I today run into a well known problem with avr-gdb.
There is already a patch provided within the bug report.


https://sourceware.org/bugzilla/show_bug.cgi?id=13519

Can someone please commit that patch to the current gdb sources please?
I checked the patch against gdb 9.1 for some minutes and it looks
perfect, even after 8 years :-). It is only a 4 line patch and local to avr.

Would be nice to see the patch going into the trunk/master.

Without the patch it is impossible to debug on assembler level with avr.
A very basic feature I believe :-).

Regards
  Klaus