Rename kernel flavour files, s/vyatta/vyos/
Rename kernel flavours for i386 in the defines files.
Rename kernel flavours for amd64 too.
Rename kernel flavours for amd64 in the defines.* files too.
Rename the original config for physical platforms, for the unification of physical and virtual kernels.
Former virtual config now will be the base for the unified config.
Rename 586-virt defines.
Rename the virt defined.
Eliminate virt flavour from defines.