MDL-52312 assignfeedback_editpdf: changes to files after FPDI update

1) Change the fpdi_bridge class so that it extends the pdf class,
rather than the TCPDF class.
2) Updated the editpdf/fpdi/readme_moodle.txt file to document the changes.
3) Updated the editpdf/thirdpartylibs.xml to reflect the update to the
FPDI library.

mod/assign/feedback/editpdf/fpdi/fpdi_bridge.php

@@ -29,8 +29,10 @@ if (!class_exists('TCPDF', false)) {
 
     /**
      * Class fpdi_bridge
+     *
+     * This has been modified to use the Moodle pdf class which in turn extends the TCPDF class.
      */
-    class fpdi_bridge extends TCPDF
+    class fpdi_bridge extends pdf
     {
         /**
          * Array of Tpl-Data

mod/assign/feedback/editpdf/fpdi/readme_moodle.txt

@@ -10,7 +10,7 @@ Information
 URL: http://www.setasign.de/products/pdf-php-solutions/fpdi/
 Download from: http://www.setasign.de/products/pdf-php-solutions/fpdi/downloads
 Documentation: http://www.setasign.de/products/pdf-php-solutions/fpdi/manuals/
-License: Apache Software License 2.0
+License: The MIT License (MIT)
 
 Installation
 ------------
@@ -19,6 +19,13 @@ Installation
 3) Update mod/assign/feedback/editpdf/fpdi/fpdi_bridge.php (or the replacement file) to extend 'pdf' instead of 'TCPDF'.
 4) Make a note below of any changes made.
 
+2015/12/04
+----------
+Updated to FPDI: 1.6.1
+
+1) Changed 'TCPDF' to 'pdf' (as stated above).
+2) License changed from Apache Software License 2.0 to The MIT License (MIT).
+
 2015/10/01
 ----------
 Updated to FPDI: 1.5.4

mod/assign/feedback/editpdf/thirdpartylibs.xml

@@ -3,8 +3,8 @@
   <library>
     <location>fpdi</location>
     <name>FPDI</name>
-    <license>Apache</license>
-    <version>1.5.4</version>
-    <licenseversion>2.0</licenseversion>
+    <license>MIT</license>
+    <version>1.6.1</version>
+    <licenseversion></licenseversion>
   </library>
 </libraries>