Changes (in chronological order)
  Files                         Description
  -----                         -----------
  website/cgi-bin/
      meme_request.pl           Fixed a bug where the absence of the bgsrc 
                                parameter was causing problems when it was 
                                supposed to be optional. 
                                This is because I expected Perl to return
                                undef from CGI::param() when the parameter
                                doesn't exist but apparently this depends on
                                the context and in array context it returns an 
                                empty array instead.

Installing the patch:
  1) Change into the root meme_4.6.1 distribution directory
  2) Apply the patch by running:
    patch -p0 -i PATH_TO_PATCH/meme_4.6.1.patch_2
  3) If you have previously installed then optionally change into the website/cgi-bin subdirectory (it's slightly faster this way)
  4) Make the install files:
    make
  5) Install by running:
    make install

  If run on split server this is only needed on the web-server side.