Description of problem:
There are several JAR files in business-central.war/WEB-INF/lib that provide duplicate classes. It should be possible to remove at least some of them. Having duplicate class files on classpath is Bad Thing and may cause various compatibility issues.

Version-Release number of selected component (if applicable):
6.1.0.CR1

How reproducible:
-

Steps to Reproduce:
1. Run attached Bash script in WEB-INF/lib, see report.

Actual results:
avalon-framework-4.1.4.jar + avalon-framework-api-4.3.1.jar

• share a lot of classes

closure-compiler-r1741.jar + js-1.7R2.jar + rhino-1.7R4.jar

• share some classes

commons-io-2.1.0.redhat-4.jar + uberfire-nio2-model-0.5.0.CR13-redhat-1.jar

• share following:
  org/apache/commons/io/FilenameUtils.class
  org/apache/commons/io/IOCase.class

jaxrs-api-2.3.7.Final.jar + jboss-jaxrs-api_1.1_spec-1.0.1.Final-redhat-3.jar

• duplicate spec jars

js-1.7R2.jar + rhino-1.7R4.jar

• same libs

relaxngDatatype-20020414.jar + relaxngDatatype-2011.1.jar

• same libs

stax-api-1.0.1.jar + stax-api-1.0-2.jar

• same libs

xmlpull-1.1.3.1.jar + xpp3_min-1.1.4c.jar

• share following:
  org/xmlpull/v1/XmlPullParser.class
  org/xmlpull/v1/XmlPullParserException.class

Expected results:
Dependencies on different versions of the same artifact should be unified. Some overlays may be unavoidable?

Additional info: