[libvirt] [PATCH v2] A bunch of extensions to libxl driver

[Marek Marczykowski-Górecki]

This are some additional features to libxl driver. Some of them require change
in domain config structures/syntax. Details described with each patch.
There are two bugfix patches for deadlock during daemon startup.

Changes since v1:
 - dropped 'script' disk parameter patches
 - updated 'script' interface parameter handling
 - dropped PCI passthrough patches - duplicates Chunyan's work
 - dropped RFC: libxl: special 'stubdom-dm' emulator to use qemu in stub domain
 - rebased on 1.0.6+ 
   - VIR_STRDUP
 - other changes described in individual patches 
 - new patches: 
 libxl: initialize device structures
 libxl: support paused domain restore in virDomainRestoreFlags
 libxl: support domain config modification in virDomainRestoreFlags
 libxl: support network device attach/detach
 libxl: pass ipaddr to libxl toolstack
 libxl: implement lifecycle actions from domain
 libxl: add tablet/mouse input device support