SRC_URI now uses download.gimp.org as ftp.gimp.org
causes 'pkgdev manifest' certificate error

Signed-off-by: Sergey Torokhov <torokhov-s-a@yandex.ru>

Use 'filter-lto' to allow build in LTO profiles.
Add USE="sdl2" flag.

Closes: https://bugs.gentoo.org/859901
Closes: https://bugs.gentoo.org/860246

Signed-off-by: Sergey Torokhov <torokhov-s-a@yandex.ru>

In this release of Gimp dev-preview 2.99.12 the porting
from Autotools to Meson build system take place.

The Meson now is preferred by upstream.

Due to diferences of configuration options withon configure.ac
and meson_options.txt the some src_configuration options dropped

1. related to flags:
USE="aqua cpu_flags_ppc_altivec cpu_flags_ppc_mmx cpu_flags_ppc_sse"

2. autotools configure options:
GEGL="${EPREFIX}"/usr/bin/gegl-0.4
GDBUS_CODEGEN="${EPREFIX}"/usr/bin/gdbus-codegen
--with-pdbgen

Also some patches are dropped in src_prepare() phase:

sed -i -e 's/== "xquartz"/= "xquartz"/' configure.ac || die #494864
sed 's:-DGIMP_DISABLE_DEPRECATED:-DGIMP_protect_DISABLE_DEPRECATED:g' -i configure.ac || die #615144

sed 's:-DGIMP_protect_DISABLE_DEPRECATED:-DGIMP_DISABLE_DEPRECATED:g' -i configure || die #615144
grep -F -q GIMP_DISABLE_DEPRECATED configure || die #615144, self-test

The USE="X" adds conditional support of x11-libs/libXcursor.

The FEATURES="test" now use x11-misc/xvfb-run instead virtualx.eclass to run tests.

In addition USE="doc" now build related to gobject-introspection (g-ir-doc)
plugin documentations. Early it's built was broken for autotools.

Signed-off-by: Sergey Torokhov <torokhov-s-a@yandex.ru>

This change is to add PYTHON_COMPAT for media-gfx/gimp

Signed-off-by: Sergey Torokhov <torokhov-s-a@yandex.ru>

…T 3.11

Signed-off-by: Sergey Torokhov <torokhov-s-a@yandex.ru>