New: add directory for external module and other customization

htdocs/admin/modules.php

@@ -84,10 +84,11 @@ $i = 0;	// is a sequencer of modules found
 $j = 0;	// j is module number. Automatically affeted if module number not defined.
 foreach ($conf->file->dol_document_root as $dirroot)
 {
-	$dir = $dirroot . "/includes/modules/";
+	if (preg_match('/custom$/i',$dirroot)) $dir = $dirroot . "/modules/";
+	else $dir = $dirroot . "/includes/modules/";
 
 	// Load modules attributes in arrays (name, numero, orders) from dir directory
-	//print $dir."\n<br>";
+	print $dir."\n<br>";
 	dol_syslog("Scan directory ".$dir." for modules");
 	$handle=@opendir($dir);
 	if ($handle)