'do' now has a proper scope.
Fixed NeGetInteger.
[WIP] Refactoring comma expressions.
Merge branch 'development' of /Volumes/DEVELOPMENT/Git/Nerd into development
Improved meta-command interface.

Added help and an error message when an incorrect meta-command is entered.
Fixed comma processing.

Now handles comma'd values in kv atoms.
Fixed core tests and test code.

set! returns value instead of symbol now.
Test.n outputs failed tests in a better format.
Fixed issues with PC and 32-bit builds.

Also add more memory debugging features and fixed a GC crash bug.