eglmesaext: add EGL_WL_create_wayland_buffer_from_image

http://cgit.freedesktop.org/mesa/mesa/commit/?id=5cddb1ce3c9890435374ae3e03fc4a5b57dee314

Signed-off-by: Adrian Negreanu <adrian.m.negreanu@intel.com>
Merge pull request #179 from groleo/master

eglmesaext: add EGL_WL_create_wayland_buffer_from_image