Update of bundled compileall2 module to 0.7.0
    
    Adds the optional --hardlink-dupes flag for compileall2 for pyc deduplication
    
    This is explained in https://discuss.python.org/t/3014
                     and https://github.com/fedora-python/compileall2/issues/16
    
    This option is not yet used anywhere. That allows us to backport this to all
    Fedoras but only use --hardlink-dupes on rawhide first.