util: Do not use PRIx64 macro
util: Do not use PRIx64 macro

It breaks the build on Mingw32,  because PRIx64 is coming
from the Win32 headers, but virAsprintf uses the gnulib printf.

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