Comment 10 for bug 791335

Also, "the ubuntu patch for binutils-avr is huge (>100MB) and i don't even dare to look at it, so i'll file a merge request." --> the ubuntu patch is including the source to binutils since it uses a version that ubuntu no longer keeps in the archive (but Debian did.)

It looks like Debian includes the source now too:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=618657

so a sync will probably work (I haven't tried)