External dependency bump: Cairo 1.10

[Benjamin Otte <otte gnome org>]

Hi,

I'd like to bump the Cairo dependency for 1.10 for Gtk 3. Cairo 1.10
adds a few features that I want to use in the public GDK API - most
notably regions - and this change needs to be done while we can break
API.

Cairo 1.10 is not released yet, but is scheduled for release on August
16th. [1] Prereleases will appear every other week, the current one is
1.9.8.

Benjamin


1: http://lists.cairographics.org/archives/cairo-announce/2010-June/000158.html