Bug 214005 [regression]In pdf, master page content lost.[1200]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFPageLM.java
headerExecutor.execute( );
		PDFRegionLM regionLM = new PDFRegionLM( context, page.getHeader( ),
				headerContent, headerExecutor );
		boolean allowPB = context.allowPageBreak( );
		context.setAllowPageBreak( false );
		regionLM.layout( );
		context.setAllowPageBreak( allowPB );
	}
	/**
	 * layout page footer area
	 * 
	 */
	protected void layoutFooter( )
	{
		IContent footerContent = pageContent.getPageFooter( );
		IReportItemExecutor footerExecutor = new DOMReportItemExecutor(
				footerContent );
		footerExecutor.execute( );
		PDFRegionLM regionLM = new PDFRegionLM( context, page.getFooter( ),
				footerContent, footerExecutor );
		boolean allowPB = context.allowPageBreak( );
		context.setAllowPageBreak( false );
		regionLM.layout( );
		context.setAllowPageBreak( allowPB );
	}
	public void removeHeader( )
	{
		page.removeHeader( );
	}
	public void removeFooter( )