12310 Add demangle(1) command

@@ -9,10 +9,11 @@
 # http://www.illumos.org/license/CDDL.
 #
 
 #
 # Copyright 2017 Jason King
+# Copyright 2019 Joyent, Inc.
 #
 
 #
 # MAPFILE HEADER START
 #

@@ -28,9 +29,10 @@
 #
 $mapfile_version 2
 
 SYMBOL_VERSION ILLUMOSprivate {
     global:
+        sysdem_parse_lang;
         sysdemangle;
     local:
         *;
 };