REG_SET

Purpose:        Sets registry entry

Input Syntax:   REG_SET <key> <value>

Input Params:   key   CHAR(128) = key name
                value CHAR(256) = value

Output Syntax:  [+|-]<message>

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

Implementation: registry.c / f4adp_reg_set()

Right required: R_REGISTRY
