Document callback changes and avoid static lifetime (#2366)

CHANGELOG.md

@@ -156,6 +156,8 @@
 ## Changed
  * Fixed name collisions when having a C `enum` and a `typedef` with the same
    name.
+ * The `ParseCallbacks::generated_name_override` now receives `ItemInfo<'_>` as
+   argument instead of a `&str`.
 
 ## Removed
 

bindgen/callbacks.rs

@@ -32,7 +32,10 @@ pub trait ParseCallbacks: fmt::Debug {
 
     /// This function will run for every extern variable and function. The returned value determines
     /// the name visible in the bindings.
-    fn generated_name_override(&self, _item_info: ItemInfo) -> Option<String> {
+    fn generated_name_override(
+        &self,
+        _item_info: ItemInfo<'_>,
+    ) -> Option<String> {
         None
     }