Support existing Fortran Code in ValueRangeCheck

[hiker]

It should be reasonable easy to extend the (new, see #2690) ValueRangeCheck functionality to work with existing Fortran code.
The only problem would be the concepts of module and region. That could just become the subroutine name and a region 'number' (r0, r1, ...)? I have seen this to be used in kernel extraction in a nemo example.