Create fpdf.v.1.6.0.1.php

This FPDF version is a merger between the original FPDF.php which can be found at (www.fpdf.org) and the original code from gradients.php found at (http://fpdf.de/downloads/addons/72/).
The only work done here was incorporate the code in a way that you can continue using FPDF with the now integrated function for $pdf->LinearGradient(...), $pdf->RadialGradient(...), and $pdf->CoonsPatchMesh(...), without the need to OVERLOAD functions or EXTEND the original FPDF class.