tfpt review /shelveset:RubyLibTweaks3;REDMOND\curth
Implemented more minor changes for library support:
Fixes for RubyForge #20263, #20252
Implemented File::Stat and all its methods
Implemented File.unlink, File.rename, File.stat and all the File
methods that mirror the methods on File::Stat
Implemented all the methods on ENV
Implemented Hash.inspect
Implemented Kernel.open for normal files