fix the build with python3.12

[Thomas-Ulrich]

I was not able to build the python wrapper with

git clone https://github.com/coutanto/axitra
cd axitra/MOMENT_DISP_F90_OPENMP/src
make all python

with a recent version of python (3.12). I eneded finding a solution in the file changes of the PR.

I changed the Makefile to get rid of this error:

Warning: Illegal preprocessor directive
../convmPy.f90:30:8:

   30 |    use fsourcem
      |        1
Fatal Error: Cannot open module file ‘fsourcem.mod’ for reading at (1): No such file or directory
compilation terminated.

and

../convmPy-f2pywrappers2.f90:9:16: 9 | real(kind=fd) t0 | 1 Error: Parameter ‘fd’ at (1) has not been declared or is a variable, which does not reduce to a constant expression ../convmPy-f2pywrappers2.f90:10:19:

then removing from f90 to F90 get me rid of these errors:

   16 | #define NSTYPE 6

     |  1

Warning: Illegal preprocessor directive

../convmPy.f90:33:2:



  33 | #if defined(_OPENMP)

     |  1

Warning: Illegal preprocessor directive

../convmPy.f90:35:2:

Finally the changes in parameters.f90 allow getting rid of:

  34 |       real(kind=real64) x1

     |                1

Error: Parameter ‘real64’ at (1) has not been declared or is a variable, which does not reduce to a constant expression

../convmPy-f2pywrappers2.f90:35:16: