Changes to "Wikit Revision History" between r7 and r8

Changes to Wikit Revision History between r7 and r8

~~Small patch to enable revision history to be stored in the Wikit TKD file [http://www.rkeene.org/projects/info/resources/projects/wikit/revisions/wikit-revisions-3rsk.diff].~~
Small patch to enable revision history to be stored in the Wikit TKD file [http://www.rkeene.org/projects/info/resources/projects/wikit/revisions/wikit-revs-3rsk.diff].
This has only been tested with the CGI interface.

Legend

     Only in r7
     Only in r8
     -->      Modified slightly between r7 and r8