Merge tag 'migration-20230424-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request

Everything that was reviewed since last PULL request:
- fix to control flow (eric)
- rearrange of hmp commands (juan)
- Make capabilities more consistent and coherent (juan)
  Not all of them reviewed yet, so only the ones reviewed.

Later, Juan.

PD.  I am waiting to finish review of the compression fixes to send
them.

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* tag 'migration-20230424-pull-request' of https://gitlab.com/juan.quintela/qemu

: (30 commits)
  migration: Create migrate_max_bandwidth() function
  migration: Move migrate_postcopy() to options.c
  migration: Create migrate_cpu_throttle_tailslow() function
  migration: Create migrate_cpu_throttle_increment() function
  migration: Create  migrate_cpu_throttle_initial() to option.c
  migration: Move migrate_announce_params() to option.c
  migration: Create migrate_max_cpu_throttle()
  migration: Create migrate_checkpoint_delay()
  migration: Create migrate_throttle_trigger_threshold()
  migration: Move migrate_use_block_incremental() to option.c
  migration: Use migrate_max_postcopy_bandwidth()
  migration: Move parameters functions to option.c
  migration: Move migrate_cap_set() to options.c
  migration: Move qmp_migrate_set_capabilities() to options.c
  migration: Move qmp_query_migrate_capabilities() to options.c
  migration: Move migrate_caps_check() to options.c
  migration: Create migrate_rdma_pin_all() function
  migration: Move migrate_use_return() to options.c
  migration: Move migrate_use_block() to options.c
  migration: Move migrate_use_xbzrle() to options.c
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>