Changes from RIB-2.0b to RIB-2.1
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o  Added support for the Apache mod_perl to the UNIX versions
   of RIB. Adding this feature provides a tremendous performance
   gain to RIB, elminating the need for the server to start perl
   and parse the CGI scripts upon each invocation. For more info
   on mod_perl see http://perl.apache.org/.

o  Corrected typos in doc/top_help.html and doc/interoperation.html

o  Corrected problem with importRepository.pl which assumed that
   the string "/rib/" would appear in the URL of RIB-1.0 repositories.
   There were two occurrences of this bug in the script.

o  Removed "cgi-bin/" from the URLs used by RIB. Instead
   of storing all exectables in a ScriptAlias directory, the
   ".pl" extension will siginify that a file is executable to
   the HTTP server.

o  Changed <EMBED> tag generated in adminRepository.pl to
   point Netscape at the JDK 1.1.2 plugin provided at the
   RIB home page (http://www.nhse.org/RIB/plugins.html) instead
   of the Sun Java web page. The Sun Java web page prompted the
   user to download the latest version of the plugin rather than
   the one used during RIB development.

o  Added setCaretPosition(0) calls in RIB's java repository
   administration interface whenever the text in a JTextComponent
   changes. The makes the scrollbar rewind.

o  Fixed RibComm.getObject() java src which caused the repository
   administration interface to not be capable of importing
   objects between repositories living under the same
   installation of RIB.

o  Fixed join.pl so that entries along both axes in the
   resulting html table are alphabetized non case-sensitive.

o  Fixed top.pl so that first repository name in second
   dropbox is always selected. Some browsers didn't automatically
   select the first value, which caused an error if the user
   pressed the submit button before choosing a repository.

o  In the object editor, changed the "Create" button text to
   "New" for creating new relationships. The "Create" text was
   causing some confusion with new users.

o  Changed the data model editor so that when a data model is
   opened all of the Class tree nodes are made visible. Previously
   only the nodes which were subclasses of Rigobject were visible.

o  Added a one-page printable version of the help documentation
   linked from the documentataion table of comments

o  Removed error checking statement from bin/updateInterop.pl
   that always failed.

o  Added the data model editor guide and begniners guide to the
   documenation

o  Fixed a bug in editConfig.pl which didn't respect the fact
   that column names in MySQL tables are not case sensitive.
   lc($oldfield) == lc($newfield) => don't add $newfield
