Update the CGI.pm Perl module to version 3.40 (from 3.35) as required by
devel/rt3 in fastcgi mode.

Changes since 3.35:
- CGI::Fast no longer depends on a specific Perl version.
- Makefile.PL now depends on FCGI so that CGI::Fast installs properly.
- Fixed regression in "exists" function when using tied interface to CGI
  via $q->Vars.
- Added nobr() function.
- popup_menu() allows multiple items to be selected by default.
- Patch from Renee Backer to avoid doubled <http-equiv> headers.
- Fixed documentation bug that describes what happens when a parameter
  is empty.
- Fixed overlap of attribute and parameter space.
- Fix pragmas so that they persist over modperl invocations.
- Fixed handling of chunked multipart uploads.
- Fix CGI::Cookie to support cookies that are separated by "," instead of ";".

Maybe we should add a patch to handle the p5-FCGI dependency as an option
later?

(tonnerre)