IBP banding data system: emacs customizations

The actual code for ibp.el starts with a comment that references this documentation. Semicolon (;) is the e-lisp comment character.

;; ibp.el:  Common functions for emacs IBP banding data extensions
;;----------------------------------------------------------------
;; For documentation, see:
;;   http://www.nmt.edu/~shipman/z/ibp/doc/iband7/emacs/
;;----------------------------------------------------------------