we should use CACHE_DIR after resolve its defaults in build_lib.sh
add optional kvm_cpu parameter to kvm
add gcc-c++ to the cdrom.ks for centos-6.4
add disk virtio support to kickstart
fix typo in kvm_cpu test
add kvm_if option (none, scsi, ide, virtio)
Merge branch 'sbubnov/feature/rhel-virtio/master' into feature/DCB-218/master
add virtio support to centos-6.5