Fix for Intel Compiler Issue

[mathomp4]

This PR fixes a weird bug seen when the GEOSadas is advanced to the latest sub-components (see GEOS-ESM/GEOSadas#103).

For reasons yet unknown, when the sub-components are advanced, geos_StateIO.F90 fails with errors like:

/discover/swdev/mathomp4/Models/GEOSadas-5_29_0-with-Bills/GEOSadas/src/Components/@GEOSana_GridComp/GEOSaana_GridComp/GEOSgsi_Coupler/geos_StateIO.F90(1442): error #6404: This name does not
 have a type, and must have an explicit type.   [SG]
      do j=1,sg%lon2
-------------^

Note: This seems to happen with both Intel 19.1.3 and Intel 2021.2. It is unknown if GNU would show an issue as the GNU compilers cannot as yet compile the GEOSadas.

The fix in this PR (by @rtodling) is to make some internal procedures external.

[rtodling]

The fix for this is now under:

feature/rtodling/change_due2odd_compiler_bug

[mathomp4]

Closed in favor of #48