Files aren't being installed into privileged directories as part of the
build but instead into $X11_PREFIX which resides in current user's home
directory.
Change the cache key to avoid reusing old cache entries, which would
lead to permission errors.
Signed-off-by: Mike Gelfand <mikedld@mikedld.com>
Add a github workflow that builds the Xservers on Linux and also
runs build-test of several common drivers against xorg sdk.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>