WMF export on non-win32

["W. Borgert" <debacle debian org>]

As far as I know WMF export is available on win32 platform
only.  If so, please do sth. like:

N_("cgm,dia,dxf,eps,epsi,eps-builtin,eps-pango,fig,mp,plt,
hpgl,png,shape,svg,tex,wpg,"
#ifdef G_OS_WIN32
"wmf"
#endif
)

instead of

N_("eps,png,wmf,cgm,dxf,fig")

This would close Debian bug #213171.
Btw., why is this string translatable?

Cheers, WB