Porter-Duff composition operator used. This saves a malloc when passing
an AlphaSrcPainter as a value of Painter interface type.
R=r
CC=golang-dev
http://codereview.appspot.com/2149044
A freetype.Context now has dst and src image setters and the notion of
a current point, instead of having to pass a painter and pt to DrawText.
R=r, rsc
CC=golang-dev
http://codereview.appspot.com/2169041
just version 2. The FTL (Freetype Licence) is still available. This
matches the original Freetype library (written in C).
This only expands and does not further restrict the licensing options
available to users of the freetype-go library.
R=adg
CC=golang-dev
http://codereview.appspot.com/1731049
draw text onto an image.
This is a simple API that doesn't handle line breaking, ligatures,
right-to-left or vertical scripts, and other fancy features.
R=r, rsc
CC=golang-dev
http://codereview.appspot.com/1121045
