Bug 196272 Text position is incorrect in postscript and ppt.
Text position need to be ajusted according to baseline position.
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/device/PPTPage.java
{
	private PPTWriter writer;
	private boolean isDisposed;
	public PPTPage( PPTWriter writer )
	{
		this.writer = writer;
		this.isDisposed = false;
	}
	void setPageSize( int pageWidth, int pageHeight, Color backgroundColor )
	{
		writer.newPage( convertToPoint( pageWidth ),
				convertToPoint( pageHeight ),
				backgroundColor );
	}
	
	public void clip( int startX, int startY, int width, int height )
	{
		
	}
	public void clipRestore( )
	{
		
	}
	public void clipSave( )
	{
		
	}
	public void dispose( )
	{
		if ( !isDisposed )