from region modules. The LSL translator is extended to generate the
modInvoke format of commands for directly inlined function calls.
A region module can register a function Test() with the name "Test".
LSL code can call that function as "Test()". The compiler will translate
that invocation into modInvoke("Test", ...)
script messages to region modules and sending back replies.
Hook IScriptModuleComms.OnScriptCommand to see commands and use
DispatchReply to reply to the script. It is recommended to pass the "id"
parameter from the event as the "k" parameter of the reply.
The script will receive the reply as a link message from link -1.
