Prepared the README file for release 0.9
First version of documentation completed
Extending the documentation
Added some initial documentation of the cgi_potocol module
Correction in cgi_get_session
Apply default initialisation to prevent incorrect checking in column_function
Expanding the test/example program for CGI - correcting a few mistakes
Small changes to CGI module - keep track of header
Initial checkin of test/example program for the CGI module
Extended the implementation of the CGI module - notably error reporting
