FMSLogo Code

Add missing header files to fix build breaks when compiling without a precompiled header.

Add benchmark results for FMSLogo 8.3.0

Update expected test results based on second 8.3.0 test pass (after fixing a test bug in dll.lgo)

Update results based on the 8.3.0 test pass

Fix a test bug that caused a crash (invalid memory read)
Also remove repeated test cases.

Update with the results from the 8.3.0 test pass

Increment the version to 8.3.0 to prepare for a formal release

Ban "non-negative" and "non-zero"
The forms without hypens are now preferred in technical literature.
See "Mathematical Writing" by Donald Knuth.

Ban "lefthand" for the same reason that "left-hand" was banned.
(Adding "hand" is superflous and colloquial)

Replace the example in SCROLLX and SCROLLY with something that does something useful.