Import openmpi-1.6.3 as wip/openmpi163.

The Open MPI Project is an open source MPI-2 implementation
that is developed and maintained by a consortium of academic,
research, and industry partners. Open MPI is therefore able to
combine the expertise, technologies, and resources from all
across the High Performance Computing community in order to
build the best MPI library available. Open MPI offers advantages
for system and software vendors, application developers and
computer science researchers.

Features implemented or in short-term development for Open MPI
include:

  - Full MPI-2 standards conformance
  - Thread safety and concurrency
  - Dynamic process spawning
  - Network and process fault tolerance
  - Support network heterogeneity
  - Single library supports all networks
  - Run-time instrumentation
  - Many job schedulers supported
  - Many OS's supported (32 and 64 bit)
  - Production quality software
  - High performance on all platforms
  - Portable and maintainable
  - Tunable by installers and end-users
  - Component-based design, documented APIs
  - Active, responsive mailing list
  - Open source license based on the BSD license