Now all modules are in core modules folder

modules/pathologic/pathologic.install

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * Your standard .install module.
+ */
+
+/**
+ * Implementation of hook_update_N().
+ *
+ * Update to Pathologic 3
+ */
+function pathologic_update_6300() {
+  global $conf;
+  foreach (array_keys($conf) as $key) {
+    if (strpos($key, 'filter_pathologic_href_') === 0 || strpos($key, 'filter_pathologic_src') === 0) {
+      // We're not using these anymore
+      variable_del($key);
+    }
+    elseif (preg_match('/^filter_pathologic_abs_paths_(.*)$/', $key, $matches)) {
+      // This variable has a new name
+      variable_set('filter_pathologic_local_paths_' . $matches[1], variable_get($key, ''));
+      variable_del($key);
+    }
+  }
+  return array();
+}
+
+/**
+ * Implementation of hook_uninstall().
+ */
+function pathologic_uninstall() {
+  // Iterate through the site's variables and delete ones created by Pathologic.
+  global $conf;
+  foreach (array_keys($conf) as $key) {
+    if (strpos($key, 'filter_pathologic_') === 0) {
+      variable_del($key);
+    }
+  }
+}