Add IDisposable implementations

[HurryStarfish]

With the amazing variety of modules in here (most of which I've admittedly never used), it would be good if we could compile a list of classes that would be suitable to be implementing the upcoming IDisposable. Good candidates might be anything that currently has a Delete/Close/Free/Destroy/Release/... method to release unmanaged resources*, but it's hard for me to find/judge modules that I've never used.
So far I've got:

• the streams from all the SStream modules
• the various shared memory objects from Interprocess.
• TDBConnection from the Database module (what about the other classes in there? I don't know, I've never used this)
• subclasses of the of the above in the various db modules that import Database

Any other suggestions?

* In particular, resources that are limited or potentially have an impact on performance or the outside world (such as network connections) are important. A Delete method that just releases a few small wrapped C objects might not be worth bothering.

[GWRon]

Chances are good that sdl.mod has some stuff (outside of bah.mod). Also wx.mod is a candidate having so many stuff in it that the new features might "truncate" stuff needed for the wrapper.