upstream updates src/cairo-qt-surface.cpp, cause files/cairo-1.10.2-qt-surface.patch failed to patch.
I use cairo-9999 because my firefox got seg-fault when it quits.
By using gdb, I find that seg-fault happens in libcairo, so I update
cairo to live build and firefox stop crash when it quits.
And this bug is confirmed by bug #456818.
cairo-1.10.2-qt-surface.patch is no longer applied in cairo-9999