[Trac #316] Pull in new Cairo tesselator

[Zarro Boogs per Child]

#316: Pull in new Cairo tesselator
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 Reporter:  krstic  |       Owner:  blizzard
     Type:  task    |      Status:  new     
 Priority:  high    |   Milestone:  BTest-2 
Component:  distro  |    Keywords:          
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 Our Cairo performance sucks. We should ask Carl what's the timeline with
 his new tesselator hitting Cairo upstream, and pull it into our builds
 manually if we need to. We'll probably also need to tone down the
 precision quite a bit.

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Ticket URL: <http://dev.laptop.org/ticket/316>
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