The source project of this merge request has been removed.
util: add anon_file.h for all memfd/temp file usage
Move the Weston os_create_anonymous_file code from egl/wayland into util, add support for Linux memfd and FreeBSD SHM_ANON, use that code in anv/aubinator instead of explicit memfd calls for portability.
Previous discussion: https://patchwork.freedesktop.org/patch/198933/