-image: Update the firmware description in manpage
- image: Clean up some grammar for image type
- image: firmware: -s is required
- image: For firmware, build an image that is actually the size we say it
         should be.
- Detect invalid dependency lines
- Fix kern.randompid / parallel pid reuse resulting in 100% CPU.
- testport: Properly use BUILD_PARALLEL_JOBS (not PREPARE) for
  dependency building.
- options: Honor the -p option
- Add <tree>-<jailname> CUSTOMISATION support
- options: if no jail is passed, the local host architecture is taken
- options: Add arch -a option