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
public static IConfigurationElement[] findConfigurationElementsByExtension(
			String extensionId )
	{
		if ( extensionId == null )
			return null;
		
		IExtensionRegistry registry = Platform.getExtensionRegistry( );
		IExtensionPoint extensionPoint = registry
				.getExtensionPoint( extensionId );
		if ( extensionPoint == null )
		{
			return null;
		}
		return extensionPoint.getConfigurationElements( );
	}
	/**
	 * Find Configuration Element from Extension Registry by ID
	 * 
	 * @param extensionId
	 *            String
	 * @param id
	 *            String
	 * @return
	 */
	public static IConfigurationElement findConfigurationElementById(
			String extensionId, String id )
	{
		
		IConfigurationElement[] elements = findConfigurationElementsByExtension( extensionId );
		if ( elements == null )