[cairo] quartz failures

[Baz]

Really for the benefit of vlad - this is what I see failing now

Megalith:~/cairo/main brianewins$ make -j4 test 2>&1 |grep '^FAIL:'
FAIL: clip-operator
FAIL: dash-scale
FAIL: dash-zero-length
FAIL: dash-state
FAIL: degenerate-path
FAIL: font-matrix-translation
FAIL: glyph-cache-pressure
FAIL: leaky-dash
FAIL: mask
FAIL: operator-clear
FAIL: operator-source
FAIL: paint-source-alpha
FAIL: paint-with-alpha
FAIL: radial-gradient
FAIL: random-intersections
FAIL: rectangle-rounding-error
FAIL: rotate-image-surface-paint
FAIL: scale-source-surface-paint
FAIL: select-font-face
FAIL: show-text-current-point
FAIL: text-antialias-gray
FAIL: text-antialias-none
FAIL: text-antialias-subpixel
FAIL: text-pattern
FAIL: text-rotate
FAIL: unantialiased-shapes
FAIL: unbounded-operator
FAIL: ft-text-vertical-layout-type1
FAIL: ft-text-vertical-layout-type3
FAIL: pdf-features
FAIL: ps-features