examples updated to support fcgi linked library

These are the changes I made to the examples for testing, if you are interested.
I thought about creating a different `fcgi-examples` folder, but then it made sense to use the `ENABLE_FASTCGI` switch.
This also fixed using the modules as *CGI*, when the library was in fact build with *FastCGI*.
Otherwise these won't even run as normal CGIs anymore, if my tests are correct.