Remove tesselated path renderer and supporting code, glu, and libtess target

[bsalomon, 2012-05-11 16:00:19]

I'm going to make some changes related to GrDrawState's state bits, including
kEdgeAAConcave_StateBit. The following arguments for getting rid of it and the
rest of the tess pr occurred to me:

1) We aren't using it and Stephen had explored improving performance to use it
going forward and determined it was most likely a dead end.

2) (Hopefully) soon it will require a rewrite as a custom effect to continue to
work and given (1) it is doubtful that it is worth the effort to do so.

3) It already doesn't really work since GrDrawState was modified to not
correctly handle the edge data for performance reasons.

4) The code will remain in the skia repo history for posterity should we decide
to harvest parts of it in the future.

I'm open to arguments to keep it around, but I feel like it is time to go.

[Stephen White, 2012-05-11 16:25:35]

LGTM.

Kill it!

[TomH, 2012-05-11 17:31:38]

LGTM

[bsalomon, 2012-05-21 22:18:17]

Closed with 3912.