Resolve compilation error involving static const local variables

[ceblanton]

The fix correctly resolves the compilation error where static const local variables were being initialized with other static const variables (is2), which is not a valid constant expression in C.

Description
Fixes #380

How Has This Been Tested?
Passes tests on GFDL workstation and gaea (except the mpi tests that are expected to fail on the latter)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• New check tests, if applicable, are included
• make distcheck passes