Support Cray Fortran compilers

[rcabell]

WRF-Hydro's build system / configure scripts don't currently support the Cray Fortran compiler and fail on the Cray Intel compiler.

Expected Behavior

Cray Fortran (PrgEnv-cray) and Cray Intel Fortran (PrgEnv-intel) should be supported for building WRF-Hydro.

Current Behavior

The Cray Fortran Programming Environment is totally unsupported, and the Cray Intel Programming Environment is currently broken (environment variables and preprocessor flags incorrectly set).

Possible Solution

1. Update the arc/macros.mpp.intel.cray_xc to match the other current Intel build macros
2. Add a macro file for Cray Fortran
3. Add an option to configure to support Cray Fortran

Your Environment

• Version of the code used: v5.2.x
• Operating System and version: Cray SUSE Linux Enterprise Server 15
• Compiler and version: Cray Fortan 9.1.1

[rcabell]

This was addressed with #539 and #540. Closing now.