[news.eclipse.platform.rcp] Update with RCP

[Bob Foster <bob@xxxxxxxxxx>]

Here's a simple question. Not every Eclipse plug-in will run in the 
arbitrary RCP application (just like not every WSAD plug-in will run in 
Eclipse). If I enable the update manager in an RCP app, how do I keep 
someone from installing Joe's Random Eclipse Plug-in into my app, with 
the concomitant instability that might cause?

(For example, right now it's quite possible that installing another 
editor might break one of mine. I get the bug report.)

I don't want to double-bolt the door, just provide some minimal barrier 
to entry.

Bob