Added FCGI module.
Wrapped code in module, began conversion to Intarweb.
More progress.
Still working in intarweb integration.
FCGI module probably complete but for compilation error.
Fixed bug in pattern match expression.
Revised 1st two expressions in URL match.
Added cav-web-fcgi to setup file.
Code seems to be working.
Added logged-in parameter where needed, and support for logging out.
Logout function doesn't return anything.
Ready for release.