[emacs] Modifyng .emacs.d layout to get rid of warning on Debian

* Running emacs 24 on Debian complains about adding .emacs.d to
  'load-path. Practically everything I want to load is in elpa, but
  there are a few things that I want to install manually. Those things
  I put in 'meextensions'. I haven't tested this on MacOSX yet. If it
  doesn't work, I'll push another fix for MacOSX.