Sample web app.  Modify build script as needed to set local environment paths

web.xml specifies which implementations for each API are used

The base servlet handles the following URLs and responds as follows:

/		gives index to everyone, using demotools/IndexPage
/everyone	another page available to everyone, using demotools/PublicPage
/private	a page available only to known users, demotools/PrivatePage
/showme		a page which knows your name, demotools/PrivatePage

For authentication, either use an MIT x509 certificate, or the
username/password Oscar/oki

There is a login servlet at
/login 

and a logout servlet at
/logout

