Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Unhook headers from development tree and point to the actual system headers.

This commit was generated by cvs2svn to compensate for changes in r59138,
which included commits to RCS files with non-trunk default branches.

This is a command-line management tool for RAID controllers managed by the
mlx(4) driver.