block: support locking on change medium

New optional argument for 'blockdev-change-medium' QAPI command to allow
the caller to specify if they wish to enable file locking.

Merge tag 'v9.1.2' into utm-edition

v9.1.2 release

hvf: arm: support TSO on macOS 15

Merge tag 'v8.0.2' into utm-edition

v8.0.2 release

v8.0.2 release

v8.0.1 release

v7.2.3 release

Merge tag 'v8.0.0' into utm-edition

v8.0.0 release

7.2.2

v8.0.0 release