The time step of output.dat file (pasor) is not taken into account

We have added some tests to make more flexible the reading of output.dat file. The tests differ according to the type of the variable.
12d0 is neither an integer nor a real. Consequently, the code does not know what to do with this kind of variable. Pay attention when you initialize your variables
in output.dat files (all *.dat files in the future) : use the correct fortran formalism.

In output.dat file, the time step must be a real : pasor=12.0d0