Merge branch 'hotfix/5.8.2' of github.com:GlobalArrays/ga into hotfix…

…/5.8.2

Modified check on size of proc grid for LAPACK-style distributions so…

… that they

work on processor groups.

find std fortran libs if needed

Turned off datatypes for strided accumulate.

Changed settings so that PR is using MPI datatypes for strided put,ge…

…t,acc.

remove debugging output

update CHANGELOG.md

bump version to 5.6.4

bump version to 5.6.3

bump version to 5.6.2