#96 ICON "Commander not backward-compatible with MSWLogo

[David Costanzo]

The command ICON "Commander is not backward compatible
with MSWLogo. In MSWLogo, it minimized the commander
window. In FMSLogo, the commander is docked by
default, so ICON "Commander does nothing. Instead, it
should undock the commander and minimize it.

Most signficiant MSWLogo programs iconify the commander
window, so it's worth preserving backward-compatibilty.

How Reproducible:
Every Time:

Steps to Reproduce:
1) Execute: SPLITSCREEN
2) Execute: ICON "Commander

What Happens:
Nothing.

Expected Result:
The commander is minimized.

[David Costanzo]

Logged In: YES
user_id=109252

I have checked in a fix that affects both ICON and
WINDOWSET. I have also added this to my regression test
suite. The fix will be available in FMSLogo 6.7.2.