• Fix parameter detection for save/restore_domain
  
• Add support for virDomainAbortJobFlags and associated
  VIR_DOMAIN_ABORT_JOB_POSTCOPY constant
  
• Add support for VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN and
  VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX constants
  
• Add VIR_DOMAIN_RUNNING_POSTCOPY_FAILED,
  VIR_MIGRATE_POSTCOPY_RESUME and
  VIR_DOMAIN_EVENT_RESUMED_POSTCOPY_FAILED constants
  
• Add VIR_MIGRATE_ZEROCOPY constant