Some config options do not apply to win32 builds (e.g. QT_NO_ICONV)

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

This keeps windows and mac styles (for mac builds)

Modified-and...
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Will help package phonon bindings and doesn't cost much since it is
already compiled.

don't use absolute path to library because it pkg-config reorders it