FMSLogo Code

Remove the "TopOfStack" global variable. This was used by UCBLogo to detect a stack overflow, but it was never used in FMSLogo, and wouldn't help with the stack overflows that it has.

Removing it makes the code simpler.

Add performance benchmars from FMSLogo 7.0.0.

Rewrite TIMETEST.TZ.ENVIRONMENT so that it can be run from an FMSLogo in C:\Program Files\FMSLogo.
The specific problem is that perl cannot know which FMSLogo to invoke and "../fmslogo" might not exist or might exist but not be the FMSLogo under test.

The fix is to do what first-level Perl script did as an FMSLogo program, using DLLCALL to set the "TZ" environment variable. Because Windows always adds the directory containing executable's image to the PATH, FMSLogo can invoke itself by running "fmslogo", whereas perl cannot.

Fix a regression that was introduced when fixing Bug #473; the single input form of KEYBOARDON had stopped returning the ASCII codes for some characters. This broke the Boing game, which uses the "/" and "\" keys.

Remove a tag that corresponds to a botched release.

Remove "Port FMSLogo to a supported UI tooolkit", since this is complete as of FMSLogo 7.0.0.
There is still more work to do to make it a pure wxWidgets application, but the OWL version has been deleted, which was the last step mentioned in this task.

Update the release cycle to match the current practice.

Update the icon to match what it looks like in FMSLogo 7.0.0.

Remove the request for a new icon, since FMSLogo 7.0.0 has one (provided by Jan-Niklas Grabe).

Change the old SourceForge 6-digit ticket numbers to the new ones
that are 1-3 digits. After a SourceForge site upgrade, the ticket
numbers were re-created to be per-project and the old numbers are
no longer visible. As a result, the old numbers are completely
useless as a ticket reference.