qemu: More clear error parsing domain def failure of tunneled migration
qemu: More clear error parsing domain def failure of tunneled migration

* src/qemu/qemu_driver.c

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