Using msgmetaset and msgmetaget

msgDestThread(msg) can hold external destination configuration, similar to:

hcitcl>msgmetaset message0 DESTCONN destName:destHost:1020
hcitcl>msgmetaget message0 DESTCONN
destName:destHost:1020

When assigning the values to messages by the msgmetaset command, destName, destHost, and destPort are the minimum values set.

You must ensure the correctness of these values.