Somehow this date was changed in error (by me) to 2012.
It should have always been 2009.

Change-Id: I87029079458d4c4eeeff2f2fc0574f10afa9af09
Reviewed-on: https://go-review.googlesource.com/23622
Reviewed-by: Rob Pike <r@golang.org>

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5916046

Split patent grant clause out of LICENSE file
and update text to be more like that used by WebM.
These changes should make Go more acceptable
to the Fedora project and they are acceptable to the FSF.

R=iant
CC=golang-dev
https://golang.org/cl/3103042

R=rsc
CC=golang-dev
https://golang.org/cl/194066

R=gri,iant
DELTA=47  (43 added, 0 deleted, 4 changed)
OCL=33127
CL=33173