Indented: no functional change.
Indented: no functional change.
Indented: no functional change.
Made the licensing explicit.
Indented: no functional change.
Better formatting of the copyright notice and statement.
Formatted to 80 columns; no functional change.
Use a symbol instead of alphabeticals for copyright flag.
Set division bars to 80 characters for convenience.
Direct download and add from https://www.gnu.org/licenses/gpl.txt
Conforming to GNU file name standards for license inclusion.
Added standard library headers.
Set up a new version number for a pending release.
Updated the 1999 copyright details.

While studying http://jess-mode.cvs.sourceforge.net/viewvc/jess-mode/jess-mode/jess-mode/jess-mode.el?view=markup
I found that part of the original copyright message had been accidentally omitted, in particular the passage
about Franz Inc's notice.