Add clipboard <-> buffer fns

[d4ncer]

(defun rk-copy-whole-buffer-to-clipboard ()
  "Copy entire buffer to clipboard"
  (interactive)
  (clipboard-kill-ring-save (point-min) (point-max)))

(defun rk-copy-clipboard-to-whole-buffer ()
  "Copy clipboard and replace buffer"
  (interactive)
  (delete-region (point-min) (point-max))
  (clipboard-yank)
  (deactivate-mark))