FMSLogo Code

Replace "TRUE" with "true" because ther literal is used as a bool, not a BOOLEAN.

Change some #define constants into "const" values.
This makes the symbols available to the debugger, which can help with debugging.

Refactoring: Change #define macros into inline functions.
This adds type safety and makes the symbols available to a debugger, which can help with debugging.
Doing this required reorganizing some of the code so that dependencies are listed first.

Refactoring: Move the logic for pushing the macro_return continuation until after it's been confirmed that proc is defined.

Remove misinformation from the comment for the eval_sequence_continue label.

Remove inaccurate comments from the apply_dispatch label.

Fix an incorrect claim in a comment.

Fix Bug #599; The output list of macros that are run as input to a procedure and which define local variables are now evaluated in the caller's context, not the context of the macro.

Add regression tests for NAME, including a regression test for Bug #598.

Mitigate Bug #598.
The definition of QUEUE and DEQUEUE were copied from UCBLogo to make it less likely to have a conflict with variables names in the caller's context.
This is not a fix, because the bug still exists.
However, this is still an improvement, as it makes FMSLogo and UCBLogo have the same bug, so code that works in one won't fail in the other.