virsh: fix snapshot-create-as to handle arbitrary names
virsh: fix snapshot-create-as to handle arbitrary names

Found this working on the next patch to use xpath to parse
arbitrary names back out.

* tools/virsh.c (cmdSnapshotCreateAs): Escape user input.

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