[libvirt] [PATCH 0/4] New command for changing media of changeable disk

This is an improved version of : https://www.redhat.com/archives/libvir-list/2011-December/msg00976.html The changes are: * New helper functions to find and change the disk XML * Use the helper functions in cmdDetachDisk * Merge insert-media and eject-media as change-media * Support --update option. [PATCH 0/4] introduces two new helper functions: vshFindDisk is to find the disk XML node in xml doc with the flags (indicates it's normal disk or changeable disk). VshPrepareDiskXML is to prepare the disk XML for disk changing commands' use. Such as detach-disk. The purpose of this patch is to prepare for upcoming new command "change-disk", which will use the two helper functions too. NB, as I explained previously, the new QEMU commands to separate tray and media management shouldn't block us. [PATCH 1/4] virsh: Two new helper functions for disk device changes [PATCH 2/4] virsh: Use vshFindDisk and vshPrepareDiskXML in [PATCH 3/4] virsh: New command cmdChangeMedia [PATCH 4/4] virsh: Add document for cmdChangeMedia Regards, Osier