build: Fix VPATH build
build: Fix VPATH build

$(srcdir) is already part of $$file since commit f1f9a7ac7e.

emaste/libvirt,libvirt/libvirt,fabianfreyer/libvirt,trainstack/libvirt,emaste/libvirt,crobinso/libvirt,fabianfreyer/libvirt,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,libvirt/libvirt,taget/libvirt,datto/libvirt,nertpinx/libvirt,jfehlig/libvirt,bjzhang/libvirt,siboulet/libvirt-openvz,datto/libvirt,rlaager/libvirt,cbosdo/libvirt,jfehlig/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,olafhering/libvirt,shugaoye/libvirt,agx/libvirt,olafhering/libvirt,bjzhang/libvirt,elmarco/libvirt,shugaoye/libvirt,crobinso/libvirt,andreabolognani/libvirt,olafhering/libvirt,datto/libvirt,elmarco/libvirt,bjzhang/libvirt,iam-TJ/libvirt,zippy2/libvirt,fabianfreyer/libvirt,crobinso/libvirt,zhlcindy/libvirt-1.1.4-maintain,VenkatDatta/libvirt,nertpinx/libvirt,cbosdo/libvirt,andreabolognani/libvirt,taget/libvirt,siboulet/libvirt-openvz,jfehlig/libvirt,bjzhang/libvirt,emaste/libvirt,jardasgit/libvirt,eskultety/libvirt,jardasgit/libvirt,emaste/libvirt,eskultety/libvirt,agx/libvirt,trainstack/libvirt,andreabolognani/libvirt,iam-TJ/libvirt,emaste/libvirt,olafhering/libvirt,trainstack/libvirt,libvirt/libvirt,eskultety/libvirt,siboulet/libvirt-openvz,crobinso/libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,cbosdo/libvirt,iam-TJ/libvirt,rlaager/libvirt,emaste/libvirt,siboulet/libvirt-openvz,agx/libvirt,nertpinx/libvirt,elmarco/libvirt,VenkatDatta/libvirt,eskultety/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,emaste/libvirt,rlaager/libvirt,VenkatDatta/libvirt,zippy2/libvirt,jardasgit/libvirt,rlaager/libvirt,zippy2/libvirt,iam-TJ/libvirt,datto/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jfehlig/libvirt,shugaoye/libvirt,bjzhang/libvirt,trainstack/libvirt,taget/libvirt,trainstack/libvirt,zhlcindy/libvirt-1.1.4-maintain,taget/libvirt,andreabolognani/libvirt,cbosdo/libvirt,taget/libvirt,shugaoye/libvirt,rlaager/libvirt,VenkatDatta/libvirt,siboulet/libvirt-openvz,agx/libvirt,zippy2/libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,eskultety/libvirt,jardasgit/libvirt,iam-TJ/libvirt,libvirt/libvirt,cbosdo/libvirt,agx/libvirt,trainstack/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,trainstack/libvirt,elmarco/libvirt,datto/libvirt