Updated core-lib to latest version

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added dummy target 'tests' to avoid zsh correction

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Eclipse cleanups

- override annotation
- avoid full-qualified names where sensible
- avoid unnecessary casts
- and make fields final if possible
- reordered some includes

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Disable checkstyle for command-line argument processing

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Update to latest core-lib and don't expose implementation-specific fields anymore.

- move fields out of Smalltalk level
- replace access by primitives

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Register the boolean classes as globals to ensure that the identity test works

Otherwise, the classes are reloaded after the initialization.

Signed-off-by: Stefan Marr <git@stefan-marr.de>