Description
In this PR,

configure.ac file has been modified to accept --enable-portable-kinds argument during configuration.
This option will define -DPORTABLE_KINDS=1 for compilation and FMS variables will be compiled with iso_c_binding kind parameters.

The same change has been made to CMakeLists.txt where users can supply the argument -DPORTABLE_KINDS=on to cmake

Fixes #1571

How Has This Been Tested?
FMS compiles with -DPORTABLE_KINDS=1 when ./configure --enable-portable-kinds with gcc on the amdbox.

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