+unsigned gw_log_mask_str (const char *str);
+/*
+ Return the log level corresponding to str.
+ str is a comma separated sequence of tokens. A token is one of:
+ "all", "default", "def", "fatal", "warn", "stat", "notice", "debug",
+ "none" or "debug"<n> where n is 0..9.
+ The level of each token are ORed with initial level being GW_LOG_DEFAULT
+ unless first token is "none" in which case the initial level is 0 (none).
+ */
+
+