[ofiwg] libfabric 1.6.0rc3 is now available

[Hefty, Sean]

libfabric 1.6.0 rc3 is available from:

https://github.com/ofiwg/libfabric/releases/tag/v1.6.0rc3

The final 1.6.0 release is targeted for the middle of next week.

Thanks,
- Sean