glx: load dri driver with RTLD_LOCAL so dlclose never fails to unload
There is no reason anymore to load with RTLD_GLOBAL and for some driver this even result in dlclose failing to unload leading to catastrophic failure with swrast fallback. Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org> Reviewed-by:Eric Anholt <eric@anholt.net> Reviewed-by:
Ian Romanick <ian.d.romanick@intel.com> Signed-off-by:
Jérôme Glisse <jglisse@redhat.com>