Framework update

This 25th June 2003 release is just a working snapshot, and as such some newer things may be incomplete or dysfunctional. Standard disclaimer applies.

Other than finally including a proper license definition, new features include [finally] being able to add identities to a keychain, to retrieve all identities regardless of what they provide, and a host of little bug fixes - I zapped a couple of hundred memory leaks which were the result of poor x509 class definitions. Luckily the x509 classes aren't all used yet.

The brings me to another point, which is with regards to the x509 classes - yes, they will become [eventually] the standard mechanism for doing things like generating certificates and the like. It's just that at present I'm working on getting simple functionality down pat, and not worrying too much about the design details. A consequence of this is the inevitable changes that will be made some time in future, which will break backward compatability. I'll try to keep these to a minimum - indeed, where possible I'll leave in old methods as deprecated but functional - but please don't say I didn't warn you. The framework mechanism under OS X is quite capable of handling parallel versions, so I don't imagine it will be too difficult a transition for anyone.