Function glib::reload_user_special_dirs_cache

pub fn reload_user_special_dirs_cache()

Resets the cache used for user_special_dir(), so that the latest on-disk version is used. Call this only if you just changed the data on disk yourself.

Due to thread safety issues this may cause leaking of strings that were previously returned from user_special_dir() that can’t be freed. We ensure to only leak the data for the directories that actually changed value though.