add new constants to openbsd.txt

Author: semarie

libc-test/semver/openbsd.txt

@@ -446,12 +446,20 @@ KI_MAXLOGNAME
 KI_NGROUPS
 KI_WMESGLEN
 LC_ALL
+LC_ALL_MASK
 LC_COLLATE
+LC_COLLATE_MASK
 LC_CTYPE
+LC_CTYPE_MASK
+LC_GLOBAL_LOCALE
 LC_MESSAGES
+LC_MESSAGES_MASK
 LC_MONETARY
+LC_MONETARY_MASK
 LC_NUMERIC
+LC_NUMERIC_MASK
 LC_TIME
+LC_TIME_MASK
 LOG_AUTHPRIV
 LOG_CRON
 LOG_FTP