qemu: Clarify a couple error messages
qemu: Clarify a couple error messages

A fedora translator filed:

https://bugzilla.redhat.com/show_bug.cgi?id=580816

Pointing out these two error messages as unclear: "write save" sounds
like a typo without context, and lack of a colon made the second message
difficult to parse.

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