vm-bhyve v1.2-beta1

Initial v1.2 release

Notable changes -

• Support for up to 32 AHCI devices on a single controller
• Reworked virtual switch code
• Interactive mode when using tmux (start directly into tmux session)
• Partial command support - vm l, vm cons <name>, etc
• UTC clock by default
• Multiple guests can be started with vm start <guest1> <guest2>
• Full virtio-console support
• Named nmdm ports