Update to PEAR 1.7.2, Image_Canvas 0.3.1, Image_Color 1.0.3, Image_Graph 0.7.2, XML_Parser 1.3.1.

Removed PHP_Compat, and references to it.
Removed ionCube/Zend/mmCache compatibility checks in test.php script.
Changed minimum PHP requirement to 5.0 in test.php script.

modules/ticket/ticket.inc.php

@@ -537,7 +537,6 @@ class ticket
 			// insert any attachments
 			if(!empty($arr['attach']) && is_array($arr['attach'])) {
 				foreach($arr['attach'] as $attach) {
-					require_once('includes/pear/Compat/Function/file_get_contents.php');
 					@$data = file_get_contents($attach['tmp']);
 					if(!empty($data)) {
 						// get file size
@@ -2708,4 +2707,4 @@ class ticket
 		$this->limit	= $construct["construct"]["limit"];
 	}	
 } 
-?>
+?>