Changeset 5a23ca84 in rtems for c/src/lib

New files from John Cotton <John.Cotton@…> and Charles-Antoine
Gauthier <charles.gauthier@…>. The power supply in their
VMEbus cage died so it was submitted at this point. It passes ttcp
which is a really good sign but they would like to do more testing
and cleanup once their hardware is functional again. Please
contact them if you are interested in using or fixing this driver.
As their comments indicate, the performance is actually quite good
even at this point as indicated by the ttcp results.

Please note that this is by no means a final version. The code is still
fairly ugly, and will require some further fixing. On the bright side, what
is attached works. I finally ran the test programs successfully with
optimized code and data cache enabled:

netdemos worked, but failed on the UDP transfer (runs out of buffers).

ttcp worked, with something like 1036 KB/sec Rx, 952 KB/sec Tx.

tftp worked