lg4l-kernel-module: new version upstream

Stabilize for x86
Sanitized keywords according to Gentoo Ebuild Guide
Unmask x11-misc/cairo-clock in gnome15-deps
gnome15-core: fix sandbox breakage on configure

GTK and/or Gnome checks create files in $HOME.
gnome15-core: replace sys-fs/udev dependency with virtual/udev
Remove -9999 ebuilds