Add metadata to enable source build (sdist) and debian packaging (stdeb)
Script "get_docstring.py" reads all "*.f" and "*.F" files and extracts the comment in them. The part of the comment at the beginning of each file, beginning with "*+" and ending with "*-", is copied into a dictionary. This dictionary has function names, in lowercase, as keys. The "setup.py" script runs the "get_docstring.py" script and saves the dictionary in "lib/docstring_pickle.pkl" pickle file. Then it is copied into the package distribution. The module name is now "pyslalib" with "slalib" as a sub-module. The "__init__.py" file for the module is in "lib". When the "pyslalib" module is loaded the dictionary is read in from the "docstring_pickle.pkl" file and saved as "sladoc". Example: >>> from pyslalib import slalib, sladoc >>> slalib.sla_veri() 205004 >>> print sladoc['sla_caldj'] . . . File "docstring_pickle.pkl" added to .gitignore.