[lib/cairo] disable anti-alias for polygon .... fix #61.
[lib/cairo] disable anti-alias for polygon .... fix #61.

KDE/qtcurve,KDE/qtcurve,gnufabio/qtcurve,gnufabio/qtcurve,gnufabio/qtcurve,KDE/qtcurve,gnufabio/qtcurve,KDE/qtcurve