build: work with glibc that lacks CPU_COUNT
build: work with glibc that lacks CPU_COUNT

Building on RHEL 5 warned:

nodeinfo.c: 305: warning: implicit declaration of function 'CPU_COUNT'

This extension macro in <sched.h> was not added until later glibc.

* src/nodeinfo.c (CPU_COUNT): Add fallback implementation.

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