Deallocatting array at the of telemac2d

This issue was created automatically from an original CUE issue. Further discussion may take place here.

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Building a strucutre to deallocate all arrays allocated during a telemac2d run.
This is necessary for the API to work properly.
This works measn the following modifications:

• Removing all save from the code (moving the variables in the module of the code)
  
• Removing common
  
• Creating dellocate subroutines for bief objects

This was checked by using valgrind to verify that there was no memory leaks.