Like I said to you before - there are several stages to a compile. config, make (compile), make test, make install. Your current installation will remain intact right up until the moment you type make install. You can rename your config.sh, and Policy.sh and rerun config (this time saying you want to include vendor_perl in @INC and the ONLY thing that has changed is your config.sh and Policy.sh which will now be rewritten. You still have the orignals unchanged under the .old ext. You can diff config.sh.old against new config.sh and SEE what to edit.

To be frank you are unlikely to get a kinder answer anywhere. I gave you 3 working options.....

Personally I would just copy the stuff from vendor_perl to site perl.

When you did the config you may have noticed there are a lot of options. No one can give you a file that will work for you. Explaining what to edit when you can easily work it out for yourself is a waste of my time.........