Make -boot arg generation more readable
Make -boot arg generation more readable

If we combine the boot order on the command line with other
boot options, we prepend order= in front of it.

Instead of checking if the number of added arguments is between
0 and 2, separate the strings for boot order and options
and prepend boot order only if both strings are not empty.

libvirt/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,libvirt/libvirt,jardasgit/libvirt,andreabolognani/libvirt,zippy2/libvirt,agx/libvirt,nertpinx/libvirt,taget/libvirt,jfehlig/libvirt,agx/libvirt,nertpinx/libvirt,crobinso/libvirt,eskultety/libvirt,andreabolognani/libvirt,eskultety/libvirt,andreabolognani/libvirt,datto/libvirt,crobinso/libvirt,jardasgit/libvirt,rlaager/libvirt,taget/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,datto/libvirt,eskultety/libvirt,taget/libvirt,shugaoye/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,eskultety/libvirt,shugaoye/libvirt,libvirt/libvirt,olafhering/libvirt,olafhering/libvirt,VenkatDatta/libvirt,taget/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,datto/libvirt,rlaager/libvirt,zippy2/libvirt,datto/libvirt,andreabolognani/libvirt,nertpinx/libvirt,agx/libvirt,eskultety/libvirt,rlaager/libvirt,olafhering/libvirt,taget/libvirt,datto/libvirt,agx/libvirt,jfehlig/libvirt,jfehlig/libvirt,rlaager/libvirt,zippy2/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,agx/libvirt,zippy2/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,rlaager/libvirt,andreabolognani/libvirt,olafhering/libvirt,fabianfreyer/libvirt,crobinso/libvirt,shugaoye/libvirt,jardasgit/libvirt,crobinso/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,libvirt/libvirt