* kwolf/for-anthony: (43 commits)
qcow2: Factor out handle_dependencies()
qcow2: Execute run_dependent_requests() without lock
qcow2: Enable dirty flag in qcow2_alloc_cluster_link_l2
qcow2: Allocate l2meta only for cluster allocations
qcow2: Drop l2meta.cluster_offset
qcow2: Allocate l2meta dynamically
qcow2: Introduce Qcow2COWRegion
qcow2: Round QCowL2Meta.offset down to cluster boundary
atapi: reset cdrom tray statuses on ide_reset
qemu-iotests: Test concurrent cluster allocations
qcow2: Move BLKDBG_EVENT out of the lock
qemu-io: Add AIO debugging commands
blkdebug: Implement suspend/resume of AIO requests
blkdebug: Factor out remove_rule()
blkdebug: Allow usage without config file
create new function: qemu_opt_set_number
use qemu_opts_create_nofail
introduce qemu_opts_create_nofail function
qemu-option: qemu_opt_set_bool(): fix code duplication
qemu-option: qemu_opts_validate(): fix duplicated code
...
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>