rubinius/rubinius — pull request #1357 by obrok (2011-10-24 20:39:12+00:00)
Title: Fixes for Thread #start, #key?, #[], #[]= in 1.9

1. Thread start conforms to the specs in 1.9
2. Turns out coercion to symbol for 1.8 needs to treat a Fixnum in a special way - changed that for 1.9