javascript: Add comments to enumerate HTML example
perl: Unify print style
perl: Remove two indentation levels from _dispatch_meta
perl: Remove auto-reauthenticate, it's too complicated
perl: Use lock to make authentication handshake atomic
php: Don't store secret, there's no need for this
php: Fix comment in example
python: Remove auto-reauthenticate, it's too complicated
python: Use lock to make authentication handshake atomic
ruby: Remove auto-reauthenticate, it's too complicated
ruby: Use mutex to make authentication handshake atomic
shell: Adapt to removed auto-reauthentication in Python bindings
Add authentication examples