title: Missing plugins when exporting Eclipse e4 RCP Application containing Birt (Eclipse 2019-3)
body: <p>Currently I am in the process of moving one of our RCP applications from an older version of Eclipse to the current version 2019-03.
  Our application is feature based an makes use of the Birt report generator. 
  When trying to lauch the application via its product-file lots of unresolved plugin requirements appear, as the combination of RCP and Birt now seems to depend on different versions of org.apache.batik.* (1.7.0 and 1.8.0).
  I can get the app running by manually enabling the different versions via Run -> Run Configurations -> Plugins. But of course this does not help when trying to export the RCP through the Eclipse product export wizard. The exported app is missing various plugins.
  So I tried to manually edit the manifest.mf of the plugin that is dependent on birt:</p>
  
  <pre><code>Require-Bundle: 
   org.apache.batik.css;bundle-version="1.7.0",
   org.apache.batik.css;bundle-version="1.8.0",
   ...
  </code></pre>
  
  <p>But this does not seem to have any effect on the plugins beeing exported.</p>
  
  <p>The tip to switch back to a plugin-based project (How best to maintain an Eclipse RCP plugin target? <a href="https://stackoverflow.com/questions/440458/how-best-to-maintain-an-eclipse-rcp-plugin-target">1</a> ) does not seem to work either.
  So does anybody know how to get Eclipse to export all required versions of the org.apache.batik plugins?</p>
  
  <p>Thanks a lot in advance!
  Tom</p>