Purely cosmetic cleanups to VinylControl / VinylControlXwax.

* Delete dead code.

* Initialize all variables.

* Clarify some variable names.

* Move member-variables to local when used purely as locals.

* Comment a lot of the member variables.
Remove dead code.
Rename remaining non-m_-prefixed variables.
Attack of the style police.
Merge pull request #129 from rryan/vc_refactor

Purely cosmetic cleanups to VinylControl / VinylControlXwax.