Merge commit '92aa5c6d77ac29574c1717bcf57827fa1e586f31' into upstream-merge

Merge commit '92aa5c6d77ac29574c1717bcf57827fa1e586f31' into upstream-merge

* commit '92aa5c6d77ac29574c1717bcf57827fa1e586f31': (43 commits)
  iostatus: move BlockdevOnError declaration to QAPI
  iostatus: rename BlockErrorAction, BlockQMPEventAction
  qemu-iotests: add test for pausing a streaming operation
  qmp: add block-job-pause and block-job-resume
  block: add support for job pause/resume
  qmp: add 'busy' member to BlockJobInfo
  block: add block_job_query
  block: move job APIs to separate files
  block: fix documentation of block_job_cancel_sync
  qerror/block: introduce QERR_BLOCK_JOB_NOT_ACTIVE
  qemu-iotests: add initial tests for live block commit
  QAPI: add command for live block commit, 'block-commit'
  block: helper function, to find the base image of a chain
  blockdev: rename block_stream_cb to a generic block_job_cb
  block: add live block commit functionality
  block: add support functions for live commit, to find and delete images.
  block: Support GlusterFS as a QEMU block backend.
  configure: Add a config option for GlusterFS as block backend
  aio: Another fix to the walking_handlers logic
  qemu: URI parsing library
  ...

Conflicts:
	blockdev.c

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>