S390: Added sysinfo for host on s390(x).
S390: Added sysinfo for host on s390(x).

In order to retrieve some sysinfo data we need to parse /proc/sysinfo and
/proc/cpuinfo.

Signed-off-by: Thang Pham <ce1cd39457cbda934ec618be1dd3821bb7a23ac7@us.ibm.com>
Signed-off-by: Viktor Mihajlovski <a96a137ca8976b5ff3114c85be7aeb3b6464dad7@linux.vnet.ibm.com>

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