For the couple of days we've been talking about how to convert existing CGI based applications to PSGI, and then run them as a PSGI application. Today we'd show you the ultimate way to run any CGI scripts as a PSGI application, most of the time unmodified. CGI::PSGI is a subclass of CGI.pm to allow you a very easy migration from CGI.pm with only a few lines of code changes to run it on PSGI enviro