VAR_EXP

Purpose:        Gets value of variable (expand variable)

Input Syntax:   VAR_EXP <var>

Input Params:   var CHAR(10)  = variable name

Output Syntax:  +<value> | -<message>

Output Params:  value   CHAR(128) = value of variable
                message CHAR(128) = human-readable message

Right required: none

Implementation: serverd.c / variable_expand()
