configure.ac: bump to version 1.8.92 for the beta release
configure.ac: bump to version 1.8.92 for the beta release

mchalupa/wayland,tulcod/wayland,tulcod/wayland,bitfactor/wayland,mchalupa/wayland,bitfactor/wayland,sir-murray/wayland,abooij/wayland,abooij/wayland,abooij/wayland,sir-murray/wayland,bitfactor/wayland,tulcod/wayland,sir-murray/wayland,mchalupa/wayland