Issue #1139676 by Dave Reid, cosmicdreams: Fixed feeds_alter() doesn't support...

Issue #1139676 by Dave Reid, cosmicdreams: Fixed feeds_alter() doesn't support modulename.feeds.inc files supported by feeds_hook_info().

feeds.module

@@ -943,6 +943,8 @@ function feeds_library_exists($file, $library) {
  * - None of that 'multiple parameters by ref' crazyness.
  * - Don't use module_implements() to allow hot including on behalf
  *   implementations (see mappers/).
+ *
+ * @todo This needs to be removed and drupal_alter() used. This is crazy dumb.
  */
 function feeds_alter($type, &$data) {
   $args = array(&$data);
@@ -951,10 +953,10 @@ function feeds_alter($type, &$data) {
   array_shift($additional_args);
   $args = array_merge($args, $additional_args);
 
+  $hook = $type . '_alter';
   foreach (module_list() as $module) {
-    $function = "{$module}_{$type}_alter";
-    if (function_exists($function)) {
-      call_user_func_array($function, $args);
+    if (module_hook($module, $hook)) {
+      call_user_func_array($module . '_' . $hook, $args);
     }
   }
 }