net-misc/spice-gtk: Switch live ebuild to meson
The upstream abandoned autotools in favor of meson in
v0.37-32-g9837f97 (even though meson support was introduced in
previous release in v0.36~128).
Unfortunately, the 'static-libs' use flag must be dropped because
meson doesn't build static libraries by default, only if
developer write meson file in that fashion, which spice-gtk
developers didn't do.
GCONF_DEBUG eclass variable is removed too - it's banned in EAPI
6+ anyway.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Matthias Maier <tamiko@gentoo.org>