try to consume Orbit's bcel directly from its repository.
diff --git a/releng/map/otdt.map b/releng/map/otdt.map
index 1259335..20fc7f6 100644
--- a/releng/map/otdt.map
+++ b/releng/map/otdt.map
@@ -35,6 +35,11 @@
 plugin@org.eclipse.objectteams.otdt.pde.ui,0.7.0=SVN,url=svn://build/svnroot/tools/org.eclipse.objectteams,path=plugins/org.eclipse.objectteams.otdt.pde.ui,tag=tags/builds/201005291758

 plugin@org.eclipse.objectteams.otdt.samples,0.7.0=SVN,url=svn://build/svnroot/tools/org.eclipse.objectteams,path=plugins/org.eclipse.objectteams.otdt.samples,tag=tags/builds/201005291758

 

+!** Consume BCEL from Orbit: **!

+plugin@org.apache.bcel,5.2.0=p2IU,id=org.apache.bcel,version=5.2.0.v201005080400,repository=http://download.eclipse.org/tools/orbit/downloads/drops/S20100519200754/repository

+! existing files on build.eclipse.org:

+!/home/data/httpd/download.eclipse.org/tools/orbit/downloads/drops/S20100308015149/drops/bundles/org.apache.bcel_5.2.0.v200803061811.jar

+!/home/data/httpd/download.eclipse.org/tools/orbit/downloads/drops/S20100519200754/repository/plugins/org.apache.bcel_5.2.0.v201005080400.jar

 

 !***************  OTDT Test CONTRIBUTION  ********************************************************