Utility functions. FOR INTERNAL USE ONLY
A set of funtions that if used would only affect libzeitgeist in the code it is used in.
string ENGINE_DBUS_NAME
            
            string ENGINE_DBUS_PATH
            
            string SIG_EVENT
            
            size_t MAX_DBUS_RESULT_SIZE
            
            uint CACHE_SIZE
            
            string get_data_path ()
            
            string get_default_data_path ()
            
            string get_database_file_path ()
            
            string path)
            
            string get_database_file_backup_path ()
            
            string get_database_file_retire_name ()
            
            string get_local_extensions_path ()
            
            bool using_in_memory_database ()
            
            Error
            
            bool parse_negation (ref string val)
            
            bool parse_noexpand (ref string val)
            
            bool parse_wildcard (ref string val)
            
            bool is_empty_string (string? s)
            
            bool log_may_read_directly ()