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
}
		
		folder = project.getFolder( dest );
		if ( !folder.exists( ) )
		{
			folder.create( true, true, null );
		}
		return folder;
	}
	/**
	 * Do import zip file into current project
	 * 
	 * @param project
	 * @param source
	 * @param dest
	 * @param monitor
	 * @param query
	 * @throws CoreException
	 */
	public static void doImports( IProject project, String source,
			IPath destPath, IProgressMonitor monitor, IOverwriteQuery query )
			throws CoreException
	{
		
		if ( source == null )
		{
			
			IConfigurationElement configElement = BirtWizardUtil
					.findConfigurationElementById(
							IBirtWizardConstants.EXAMPLE_WIZARD_EXTENSION_POINT,