Hexagon: updated software/libraries

Hexagon has updated software/libraries.

Please see http://docs.cray.com/books/S-9401-1205//S-9401-1205.pdf for the full release information.

Briefly, these packages were updated:

PGI: 12.3.0 -> 12.4.0
Cray compiler (CCE) 8.0.4 -> 8.0.5
ATP 1.4.3 -> 1.4.4.
Chapel 1.3.0 -> 1.4.0
xt-asyncpe 5.09 -> 5.10
Intel compiler 12.1.2.273 -> 12.1.4.319