schema: tighten <serial><protocol type=...> relaxNG
schema: tighten <serial><protocol type=...> relaxNG

* docs/schemas/domain.rng (qemucdevSrcDef): Restrict list of
supported <protocol type=> values.

eskultety/libvirt,trainstack/libvirt,taget/libvirt,leilihh/libvirt,soulxu/libvirt-xuhj,shugaoye/libvirt,bjzhang/libvirt,nertpinx/libvirt,dumbbell/libvirt,foomango/libvirt,zippy2/libvirt,rmarwaha/libvirt1,zippy2/libvirt,datto/libvirt,novel/fbsd-libvirt,iam-TJ/libvirt,rlaager/libvirt,trainstack/libvirt,jardasgit/libvirt,olafhering/libvirt,rmarwaha/libvirt,fabianfreyer/libvirt,taget/libvirt,rbu/libvirt,kantai/libvirt-vfork,kantai/libvirt-vfork,novel/fbsd-libvirt,agx/libvirt,zhlcindy/libvirt-1.1.4-maintain,usc-isi/libvirt,fabianfreyer/libvirt,eskultety/libvirt,libvirt/libvirt,leilihh/libvirt,rlaager/libvirt,rbu/libvirt,agx/libvirt,emaste/libvirt,danwent/libvirt-ovs,zhlcindy/libvirt-1.1.4-maintain,rmarwaha/libvirt1,nertpinx/libvirt,iam-TJ/libvirt,olafhering/libvirt,VenkatDatta/libvirt,foomango/libvirt,fabianfreyer/libvirt,crobinso/libvirt,cbosdo/libvirt,elmarco/libvirt,agx/libvirt,bjzhang/libvirt,libvirt/libvirt,emaste/libvirt,bjzhang/libvirt,jfehlig/libvirt,novel/fbsd-libvirt,dumbbell/libvirt,jeckersb/libvirt,rbu/libvirt,eskultety/libvirt,crobinso/libvirt,siboulet/libvirt-openvz,kantai/libvirt-vfork,kantai/libvirt-vfork,andreabolognani/libvirt,warewolf/libvirt,shugaoye/libvirt,leilihh/libvirt,wiedi/libvirt,iam-TJ/libvirt,rmarwaha/libvirt1,andreabolognani/libvirt,eskultety/libvirt,warewolf/libvirt,cbosdo/libvirt,jfehlig/libvirt,jeckersb/libvirt,shugaoye/libvirt,rbu/libvirt,danwent/libvirt-ovs,nertpinx/libvirt,jeckersb/libvirt,elmarco/libvirt,emaste/libvirt,jfehlig/libvirt,taget/libvirt,siboulet/libvirt-openvz,usc-isi/libvirt,rlaager/libvirt,warewolf/libvirt,rlaager/libvirt,rmarwaha/libvirt,libvirt/libvirt,taget/libvirt,novel/fbsd-libvirt,jeckersb/libvirt,jardasgit/libvirt,emaste/libvirt,wiedi/libvirt,bjzhang/libvirt,rlaager/libvirt,trainstack/libvirt,zippy2/libvirt,dumbbell/libvirt,andreabolognani/libvirt,datto/libvirt,rmarwaha/libvirt1,jfehlig/libvirt,emaste/libvirt,jeckersb/libvirt,jardasgit/libvirt,novel/fbsd-libvirt,usc-isi/libvirt,novel/fbsd-libvirt,iam-TJ/libvirt,iam-TJ/libvirt,zhlcindy/libvirt-1.1.4-maintain,rbu/libvirt,siboulet/libvirt-openvz,trainstack/libvirt,soulxu/libvirt-xuhj,iam-TJ/libvirt,andreabolognani/libvirt,crobinso/libvirt,VenkatDatta/libvirt,trainstack/libvirt,cbosdo/libvirt,leilihh/libvirt,emaste/libvirt,wiedi/libvirt,libvirt/libvirt,usc-isi/libvirt,siboulet/libvirt-openvz,VenkatDatta/libvirt,olafhering/libvirt,wiedi/libvirt,fabianfreyer/libvirt,usc-isi/libvirt,foomango/libvirt,zippy2/libvirt,datto/libvirt,zhlcindy/libvirt-1.1.4-maintain,agx/libvirt,rmarwaha/libvirt1,zhlcindy/libvirt-1.1.4-maintain,wiedi/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,danwent/libvirt-ovs,olafhering/libvirt,shugaoye/libvirt,dumbbell/libvirt,fabianfreyer/libvirt,crobinso/libvirt,danwent/libvirt-ovs,VenkatDatta/libvirt,soulxu/libvirt-xuhj,jeckersb/libvirt,leilihh/libvirt,wiedi/libvirt,novel/fbsd-libvirt,novel/fbsd-libvirt,soulxu/libvirt-xuhj,elmarco/libvirt,datto/libvirt,warewolf/libvirt,rmarwaha/libvirt,siboulet/libvirt-openvz,andreabolognani/libvirt,foomango/libvirt,rmarwaha/libvirt,wiedi/libvirt,elmarco/libvirt,kantai/libvirt-vfork,iam-TJ/libvirt,rmarwaha/libvirt,dumbbell/libvirt,agx/libvirt,nertpinx/libvirt,trainstack/libvirt,trainstack/libvirt,datto/libvirt,soulxu/libvirt-xuhj,warewolf/libvirt,warewolf/libvirt,danwent/libvirt-ovs,novel/fbsd-libvirt,jardasgit/libvirt,dumbbell/libvirt,emaste/libvirt,leilihh/libvirt,rmarwaha/libvirt1,cbosdo/libvirt,jeckersb/libvirt,warewolf/libvirt,elmarco/libvirt,eskultety/libvirt,bjzhang/libvirt,cbosdo/libvirt,taget/libvirt,rmarwaha/libvirt,shugaoye/libvirt,foomango/libvirt