basegfx::fround and friends seems needed in windows build

[Korrawit Pruegsanusak]

Hello Alexander, Caolán, all,

Regarding recent voreppe tinderbox failure [1], it seems that at least
2 methods are needed:
 * basegfx::unotools::UnoPolyPolygon::getPolyPolygonUnsafe() const
 * basegfx::fround -- I'm not sure whether we need all 3 overloaded methods

which I found that they've been deleted as part of unusedcode.easy
clean-up commit [2].

What should we do next? (partially) revert it? or ...? :-)

[1] http://tinderbox.libreoffice.org/cgi-bin/gunzip.cgi?tree=MASTER&brief-log=1328681401.30516#err592
[2] http://cgit.freedesktop.org/libreoffice/core/commit/?id=b3c3e116ff0eb9b550b73d3901395c042e31d192

Best Regards,
-- 
Korrawit Pruegsanusak