python: Make EXTRA_DIST files explicit
* configure.ac: Configure new Makefiles. * lang/python/Makefile.am: Remove dirs from extra dist and use subdirs. * lang/python/examples/Makefile.am, lang/python/src/Makefile.am, lang/python/doc/Makefile.am: New. Files that list EXTRA_DIST files.
This is similar to what lang/js does by explicitly listing the
files. This ensures that we have clean distribution tarballs
without accidentall additions that just lay in the directory.
- GnuPG-Bug-Id: T4481