x11-libs/libvdpau-va-gl: version bump, upstream fixed tests

Package-Manager: portage-2.2.8-r1
media-libs/mesa: Require llvm-3.3-r3 (for new llvm-config path + bug #506180). Always use shared libs to avoid the issues related to static linking (e.g. bug #481316).

Package-Manager: portage-2.2.10
media-libs/mesa-9999: raise libdrm dependency
x11-base/xorg-server: import init script changes for sddm from portage