recipes/gnuplot-mode.rcp: Fix failing configure.
* recipes/dictem.rcp: no autoloads in the source, add features property.
reorganize travis test scripts

Also skip testing with emacs-snapshot if only recipes have been updated.

* test/run-travis-ci.sh: Deleted.
* test/travis-ci.sh (prereqs, byte-compile, check-recipes,
  check-whitespace): New functions.
* .travis.yml (language): emacs-lisp -> generic. emacs-lisp is not
  recognized, so Travis would treat it as ruby and needlessly install
  rvm.
  (install, script): Call functions from travis-ci.sh.