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
return null;
		IDataModel dataModel1 = dataModelMap.getFacetDataModel( "jst.web" ); 
		if ( dataModel1 == null )
			return null;
		return (String) dataModel1
				.getStringProperty( "IJ2EEFacetInstallDataModelProperties.CONFIG_FOLDER" ); 
	}
	/**
	 * Returns the web contents folder of the specified project
	 * 
	 * @param project
	 *            the project which web contents path is needed
	 * @return IPath of the web contents folder
	 */
	public static IPath getWebContentPath( IProject project )
	{
		IPath path = null;
		if ( project != null
				&& J2EEProjectUtilities.isDynamicWebProject( project ) )
		{
			IVirtualComponent component = ComponentCore
					.createComponent( project );
			path = component.getRootFolder( ).getWorkspaceRelativePath( );
		}
		return path;
	}
	/**
	 * Create file from plugin directory
	 * 
	 * @param pluginRelativePath