MFC: New-bus Olicom driver

o Replace the old "oltr" driver with the completely re-written

new-bus Olicom driver, previously known as "ol".  The new
driver unfortunately does not support ISA cards yet.

o Update the microcode files, interface library and include files

to the latest PowerMACH works version.  Force even byte alignment
of adapter microcode.

o Roll in some of the patches from Nikolai Saoukh <nms@ethereal.ru>.

• Approved by: Jordan K. Hubbard <jkh@FreeBSD.org>