SkPath: fix rFooTo() methods following close()

All rSomethingTo() immediately following a close() are relative to the point we closed from, not the point we close to.  Fix that.

Seems like this has been broken since the stone ages.

BUG=skia:1474
, code.google.com/p/android/issues/detail?id=41216

Committed: http://code.google.com/p/skia/source/detail?r=10666

[bsalomon, 2013-08-09 19:36:29]

LGTM, but I think we should consider making close() store the close point so
that getLastPt() will return it. It might also simplify iteration of paths to
not have to track the last move to pt.

[mtklein, 2013-08-09 19:37:06]

On 2013/08/09 19:36:29, bsalomon wrote:
> LGTM, but I think we should consider making close() store the close point so
> that getLastPt() will return it. It might also simplify iteration of paths to
> not have to track the last move to pt.

+1.  Let's not forget to sort this out Monday with Mike.

[commit-bot: I haz the power, 2013-08-09 19:37:34]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/mtklein@google.com/22681006/6001

[commit-bot: I haz the power, 2013-08-09 19:48:32]

Change committed as 10666