Fix disability to run on systems with no PCI bus
Fix disability to run on systems with no PCI bus

The patch which moved libpciaccess initialization to one place caused
regression - we were not able to run on system with no PCI bus, like
s390(x).

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