Unified distribution beginning

This update includes:

* The new dist/ directory and contents.
* The vlc/ directory which is the package end users and developers should use.
* Four publicly available vlc.py files (renamed to reflect VLC version number).
* The __init__.py which determines Python version numbers, VLC version numbers, VLC path(s) and loads the correct module.  Extraneous in-line comments have been removed (they still live in my other repo, which will become my testing repo).
* A README.md file in the dist/ directory (it will get more detail later).
* Removing "dist" from the .gitignore file.

This should be quite safe to merge immediately, but in future I'll remember to branch off first.  ;)