Handle RHEL5 under Xen PVM

Handle RHEL5 under Xen PVM.  RHEL5 under Xen needs a special entry in inittab
for the XenCenter console.  An agetty is hung on /dev/xvc0, which is provided
by the XenU Kernel and connects to a xterm in a VNC session on the Xen server
hosting the VM, which is then connected to by the XenCenter management GUI
so that the system console appears on the Console tab for a given VM.
Handle RHEL5 under Xen PVM

Handle RHEL5 under Xen PVM.  RHEL5 under Xen needs a special entry in initta
for the XenCenter console.  An agetty is hung on /dev/xvc0, which is provide
by the XenU Kernel and connects to a xterm in a VNC session on the Xen serve
hosting the VM, which is then connected to by the XenCenter management GUI
so that the system console appears on the Console tab for a given VM.