Undeployment

[Glen Daniels <gd...@macromedia.com>]

I'm in the midst of implementing undeployment, and here's a quick summary of
my current plans.

1) Make a separate <undeployment> element which can also be the top level of
a WSDD document that gets deployed into an engine via the AdminClient.

2) <undeployment> allows children <handler>, <service>, <typeMapping>, and
<chain>.  (should we allow <globalConfiguration> to be undeployed, or just
state that you deploy an empty one if you want that?)

3) Any attributes other than "name" on those children (except for
<typeMapping>, which allows "qname" and "languageSpecificType") will be
ignored.

4) An undeployment will be processed in lexical order, which allows us to
think about reference counting later.  In other words, you shouldn't be able
to undeploy a Handler until all references to that Handler (in chains,
services, etc) have themselves been undeployed.

Thoughts?  Potential issues?

--G