SETCFG command added to change config options on the fly

["Wengier Wu" dmarc-noreply@xxxxxxxx (Redacted sender "wengierwu" for DMARC)]

Hi all,

In the latest build (build 2016.10.19) of vDosPlus I have added a new feature to change many config
options on the fly using the new SETCFG command. For example, you can change the vDosPlus window
title on the fly using:

SETCFG TITLE=New title

To change the mouse wheel setting on the fly:

SETCFG WHEELMOD=3,2

And to turn on the speaker from the DOS command line:

SETCFG SPEAKER=ON

There are many more examples, but please note that it is impossible for the SETCFG command to
support all config options. You can type "HELP SETCFG" for a list of config options
supported by the SETCFG command if you are using vDosPlus build 2016.10.19 or later. Hope this will
be useful.

Wengier