Hexagon: updated software/libraries

Hexagon has updated software and libraries.

Please see the following for full description:

http://docs.cray.com/books/S-9407-1309//S-9407-1309.pdf

Updated:

cray-mpich 6.0.2 -> 6.1.0
cce 8.1.9 -> 8.2.0
cray-lgdb 2.2.0 -> 2.2.1
atp 1.6.3 -> 1.7.0
pgi 13.7.0 -> 13.8.0
xt-asyncpe 5.22 -> 5.23

acml 5.3.0 -> 5.3.1
papi 5.1.1 -> 5.1.2
perftools (craypat) 6.1.1 -> 6.1.2