Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20170124b' into...

Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20170124b' into staging

Migration

1 My maintainer change
2 Jianjun's qtailq
3 Ashijeet's only-migratable
4 Zhanghailiang's re-active images
5 Pankaj's change name of migration thread
6 My PCI migration merge
7 Juan's debug to tracing
8 My tracing on save

# gpg: Signature made Tue 24 Jan 2017 18:39:35 GMT
# gpg:                using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-migration-20170124b:
  migration/tracing: Add tracing on save
  migration: transform remaining DPRINTF into trace_
  PCI/migration merge vmstate_pci_device and vmstate_pcie_device
  migration: Change name of live migration thread
  migration: re-active images while migration been canceled after inactive them
  migration: Fail migration blocker for --only-migratable
  migration: disallow migrate_add_blocker during migration
  migration: Allow "device add" options to only add migratable devices
  migration: Add a new option to enable only-migratable
  block/vvfat: Remove the undesirable comment
  migration: add error_report
  tests/migration: Add test for QTAILQ migration
  migration: migrate QTAILQ
  migration: extend VMStateInfo
  MAINTAINERS: Add myself as a migration submaintainer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>