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.postscript/src/org/eclipse/birt/report/engine/emitter/postscript/PostscriptWriter.java
out.println( new String( sb ) );
		out.println( "" );
		out.println( "end" );
		gRestore( );
	}
	private int toBytes( int offset, byte[] buffer, int value )
	{
		buffer[offset++] = hd[( ( value & 0xF0 ) >> 4 )];
		buffer[offset++] = hd[( value & 0xF )];
		return offset;
	}
	protected void drawRect( float x, float y, float width, float height,
			boolean fill )
	{
		drawRawRect( x, y, width, height );
		if ( fill )
			out.println( "fill" );
		else
			out.println( "stroke" );
	}
	private void drawRawRect( float x, float y, float width, float height )
	{
		y = transformY( y ) - height;
		out.print( x );
		out.print( " " );
		out.print( y );
		out.println( " moveto " );
		out.print( width );
		out.print( " " );
		out.print( 0 );