Merge branch 'devel-2.1'

* devel-2.1:
  SSH: do not check IPs
  Add separate module for backported language functionality
  Add make commit-check target
  burnin: skip migration based on hypervisor support
  Add a hypervisor constant for migration support
  LUSetClusterParams: initialize needed parameters
  hv_chroot: move unmount to CleanupInstance()
  Fix indentation error
  utils: Add function for partial application of function arguments
  gnt-instance info: sort the hv parameters
  Only use boot=on on non-ide disks only (KVM)
  Add -usbdevice tablet to KVM when using vnc
  KVM: fix a bug in _TryReadUidFile
  Fix RAPI client methods return values

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>