Sets up the python include paths to include src

def setup_path():
    """Sets up the python include paths to include src"""
    import os.path; import sys

    if sys.argv[0]:
        top_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
        sys.path = [os.path.join(top_dir, "src")] + sys.path
        pass
    return