Enhanced org-mode config, added pre-Emacs 24 package loading support.

* Cleaned up snappy.local.el per-machine config byte-compile warning.

* Skip starter-kit-* packages when in emacs version < 24.

* Load $HOME/emacs-vc/package.el when on emacs version < 24, or
  define the package loading helper as a no-op when no package.el
  is available.

* Spell checking now looks for system and /usr/local aspell.

* Added global whitespace checker mode.

  TODO: the whitespace settings need to be tweaked if starter-kit is not
  enabled.  They default to something that is way too noisy for me.

* Adjusted the emacs server start to avoid attempting to start
  the server when it is already running rather than generate
  an error.

* Added a LOUD message at the bottom of init.el to keep the
  per-machine post call at the bottom.