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/core/email_piping.inc.php

@@ -154,7 +154,6 @@ class email_piping
    		$filecontent = imap_fetchbody($mbox,$msg,$file+2);
    		if(empty($filecontent)) return false;  
    		$tmp = PATH_FILES.'/'. md5('piping'.$filename.microtime());
-   		require_once('includes/pear/Compat/Function/file_put_contents.php'); 
    		file_put_contents($tmp,$filecontent);    
    		$this->attachments[$msg][] = Array('tmp'=>$tmp, 'file'=>$filename, 'type'=> $filetype);
     }	
@@ -267,4 +266,4 @@ class email_piping
 		return string;
 	} 
 } 
-?>
+?>