VarInitClassGeneratorTest: fix class dump code

With the package moves, the generated bytecode dump has changed.
First attempt at a UnicodeRangeMatcher

Not there however.
BaseParser: remove UnicodeChar for now

Will reintroduce it once UnicodeCharMatcher makes it in
ParserStatistics: reformat .toString()
Remove SupplementaryCharMatcher
Introduce UnicodeCharMatcher; change tests...

And here is another TODO: change tests which rely on ParserStatistics's
.toString()! It sucks.

Also, try and see what can be done about that bytecode dump...