[openib-general] mem-free support now landed on trunk

[Roland Dreier]

I've just committed the last in a series of patches that lands support
for the mem-free mode of Mellanox PCI Express HCAs onto the trunk.  If
you have a chance, I'd appreciate it if you would update to the latest
subversion trunk and try it out.  If you have mem-free HCAs I'd like
to know if it works for you, and if you have other HCAs I'd like to
know if I've introduced any regressions.

This takes the mthca diff between the trunk and the roland-uverbs
branch down from 3700 lines to a much more manageable 600 lines (all
of which is related to userspace support).

Thanks,
  Roland