micro optimizations for the evaluation engine
Merge pull request #333 from Tass/master

EcmaScript => Js
on the path to get unittest running from JS
WA for #329, caused by #335
Merge pull request #336 from Tass/unittest

Unittest
preparations for a generational GC
Merge branch 'master' of github.com:Araq/Nimrod
enable 'cast' in interactive mode (beware)
system.fields|fieldPairs for objects
typo in news.txt
Merge branch 'master' of github.com:Araq/Nimrod
fixes #331, fixes #314
fixes #286
todo.txt changes
Merge branch 'master' of github.com:Araq/Nimrod
mark and sweep without bitvectors
mark and sweep GC without bitvectors works
small cleanups
better typeToString; fixes #340
provide basic == and $ logic for objects