REG_GET

Purpose:        Gets registry entry

Input Syntax:   REG_GET <key>

Input Params:   key CHAR(128) = key name

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

Output Params:  <value>   CHAR(256) = registry value
                <message> CHAR(128) = human-readable message

Implementation: registry.c / f4adp_reg_get()

Right required: R_REGISTRY
