qemu: check compression program availability of virsh save and dump
qemu: check compression program availability of virsh save and dump

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