Reorganize the avr-binutils port to use the central binutils one
(as the various arm*binutils ports are doing, too).

Add a patch to recognize the "avrtiny" architecture MCUs (ATtiny10
et al.), extracted from the Atmel AVR Toolchain 3.4.5 (they still
didn't push it upstream, alas).


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@373781 35697150-7ecd-e111-bb59-0022644237b5
Add missing file in pkg-plist.


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@373782 35697150-7ecd-e111-bb59-0022644237b5