MFC r239237, r242628 and r277044:

MFC r239237, r242628 and r277044:
- Add the UQ_MSC_NO_PREVENT_ALLOW quirk to handle devices that do not support
  the 'PREVENT/ALLOW MEDIUM REMOVAL' SCSI command.
- Improve auto-quirks detection for certain Kingston memory sticks.
- Increase the maximum number of dynamic USB quirks. USB memory stick
  devices which don't support the synchronize cache SCSI command are
  likely to also not support the prevent-allow medium removal SCSI
  command.

git-svn-id: svn://svn.freebsd.org/base/stable/8@277367 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f