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/version.inc.php

@@ -34,7 +34,6 @@ $fp = fopen('http://agileco.com/Version.txt', "r");
 $abv = fread($fp, 255);
 fclose($fp);
 # get encoding version
-require_once('includes/pear/Compat/Function/file_get_contents.php'); 
 $tmp = file_get_contents(PATH_AGILE.'index.php');
 
 if(eregi('ioncube', $tmp))
@@ -73,4 +72,4 @@ $smarty->assign('version',$ver);
 $smarty->assign('ab_version',$abv);
 $smarty->assign('encoding_version',$enc);
 $smarty->assign('modules',@$module_arr);
-?>
+?>