Add new -run-with option with an async-teardown=on|off parameter. It
is visible in the output of query-command-line-options QMP command, so
it can be discovered and used by libvirt.

The option -async-teardown is now redundant, deprecate it.

v5->v6
* deprecate the old -async-teardown option instead of removing it,
  since it has now appeared in 2 QEMU releases
* use -run-with as a grab bag commandline option for the async-teardown
  boolean parameter [paolo,markus,thomas]

v4->v5
* reword commit message [Markus]
* document the removal of the -async-teardown commandline option in
  docs/about/removed-features.rst [Markus]

v3->v4
* completely remove the useless -async-teardown option, since it was
  not wired up properly and it had no users [thomas]
* QEMU should be always uppercase in text and documentation [thomas]
* if the new -teardown option fails to parse, exit immediately instead
  of returning an error [thomas]

v2->v3
* add a new teardown option with an async parameter [Markus]
* reworded documentation of existing -async-teardown option so that it
  points to the new teardown option

v1->v2
* remove the unneeded .implied_opt_name initializer [Thomas]

Claudio Imbrenda (1):
  util/async-teardown: wire up query-command-line-options

 docs/about/deprecated.rst |  5 +++++
 os-posix.c                | 15 +++++++++++++++
 qemu-options.hx           | 34 +++++++++++++++++++++++-----------
 util/async-teardown.c     | 21 +++++++++++++++++++++
 4 files changed, 64 insertions(+), 11 deletions(-)

-- 
2.40.0