lang/opencoarrays in r436077, please give it a go

[Anton Shterenlikht]

http://www.freshports.org/lang/opencoarrays/
https://www.freebsd.org/cgi/ports.cgi?query=opencoarrays

OpenCoarrays is a BSD licensed project to provide
transport layer library for Fortran 2008 and 2015
coarrays:

http://www.opencoarrays.org/
https://github.com/sourceryinstitute/opencoarrays

The port requires GCC  5.1.0 or higher.
An easy way is to set

DEFAULT_VERSIONS=gcc=7

(or 6 or 5)

in /etc/make.conf

and to (re)build at least of one of the 3 MPI
ports supported by opencoarays (net/mpich,
net/openmpi, net/openmpi2).

At present net/mpich gives the best user experience.

No performance analysis has been done yet.

Anton