Proclets 0.1 - experimental patch

This is not so much a request for a new feature as a request for adventurous people to try out the feature I've been prototyping. See my blog for details of 'proclets'.

The tar file attached consists of a dozen or so new and modified classes that implement proclets. Handling of System.in,out,err via proxies is implemented and moderately tested. Handling of System properties is implemented but untested. The rest is unimplemented. The code is missing any security checks, and the packaging / visibility leave a lot to be desired.

I've included a throw-away tester (imaginatively) called "foo" for interatively exercising the proclet functionality. Look at the org.jnode.shell.command.Foo.java class for details.