Bug 163749 Import BIRT runtime package to wtp will leave old birt files.
Description: Import BIRT runtime package to wtp will leave old birt files. Steps to reproduce: Prepare two birt builds. 1. Create a new BIRT Web Project with one build. 2. Use another build to open the same workspace, select the project and click Business Inteligent and Reporting Tools->Import BIRT runtime component. Expected result: Old birt runtime package will be replaced with new runtime package. Actual result: Old birt plugins were kept and new birt jar files are imported. e.g. org.eclipse.birt.report.engine_2.2.0.v20061101-0630.jar org.eclipse.birt.report.engine_2.2.0.v20061107-0635.jar
viewer/org.eclipse.birt.integration.wtp.ui/src/org/eclipse/birt/integration/wtp/ui/internal/wizards/BirtWizardUtil.java
ZipFile zipFile = getZipFileFromPluginDir( source,
				getContributingPlugin( configElement ) );
		
		importFilesFromZip( zipFile, destPath, new SubProgressMonitor( monitor,
				1 ), query );
	}
	/**
	 * Get file name space from configuration element
	 * 
	 * @param configurationElement
	 * @return
	 */
	private static String getContributingPlugin(
			IConfigurationElement configurationElement )
	{
		Object parent = configurationElement;
		while ( parent != null )
		{
			if ( parent instanceof IExtension )
				return ( (IExtension) parent ).getNamespace( );
			parent = ( (IConfigurationElement) parent ).getParent( );
		}
		return null;
	}
	/**
	 * Create zip entry from plugin directory
	 * 
	 * @param pluginRelativePath
	 * @param symbolicName
	 * @return