[aur-general] Move community/*avr* to the AUR.

Hi, I have noticed that all the avr packages have been orphans ever since I can remember. gcc-avr hasn't been updated yet, and wasn't even marked out of date when I checked today. (had to mark it myself and I don't use it). I would like to move the following packages to the AUR where someone more interested in them will be able to take good care of them. avr-libc gcc-avr binutils-avr avrdude