Updated VCS packages

  * emacs, vim, emacs-org-mode: usual VCS update;
  * emacs-auctex/PKGBUILD: switch to git (upstream change), this package
    isn't replace emacs-auctex-cvs, one has to manually remove -cvs
    package and install -git one.

Signed-off-by: Vladimir Lomov <lomov.vl@gmail.com>