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.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFPage.java
{
		return pageHeight - y;
	}
	private float transformY( float y, float height )
	{
		return pageHeight - y - height;
	}
	private float transformY( float y, float height, float containerHeight )
	{
		return containerHeight - y - height;
	}
	/**
	 * Draws a line from the start position to the end position with the given
	 * linewidth, color, and style at the given pdf layer.
	 * 
	 * @param startX
	 *            the start X coordinate of the line
	 * @param startY
	 *            the start Y coordinate of the line
	 * @param endX
	 *            the end X coordinate of the line
	 * @param endY
	 *            the end Y coordinate of the line
	 * @param width
	 *            the lineWidth
	 * @param color
	 *            the color of the line
	 * @param lineStyle
	 *            the given line style
	 * @param contentByte