[news.eclipse.platform] excluding directories in plugin build

["Marc E" <marc_e@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Hi All,
  I want to exclude some directories from the resultant jar for my plugin 
('scratch' type directories for dorking around). I was able to do this by 
using the PDE tools Generate Ant Script and then adding the appropriate 
excludes="" to javac, but this seems awfully heavy-handed.  Is there a flag 
I can pass in the build.properties to achieve the same thing without 
resorting to a custom build, something like plugin.jar.excludes="" or some 
such thing?

 Thanks.

Marc