Change to provides for kernel-PAE-modules-extra

kernel-PAE-modules-extra used to provide kernel-modules-extra. This allowed packages that needed either to just require kernel-modules-extra. I see that both provide installonlypkg(kernel-module). Should packages that need either require that instead? This affects at least the following packages (maybe indirectly): gfs2-utils joystick-support libguestfs perl-Sys-Guestfs python-libguestfs virt-v2v