[Ironruby-core] Code Review: More ActionPack fixes

[Shri Borde]

  tfpt review "/shelveset:rails;REDMOND\sborde"
  Comment  : 
  defined? should clear $! of any exception that may have been thrown by const_missing
  Makes NativeMethods.SetEnvironmentVariable check if the call succeeded
  Adds a critical tag for library\socket\basicsocket\send_spec as it hung on my machine


-------------- next part --------------
A non-text attachment was scrubbed...
Name: rails.diff
Type: application/octet-stream
Size: 18569 bytes
Desc: rails.diff
URL: <http://rubyforge.org/pipermail/ironruby-core/attachments/20100119/9d4b4779/attachment-0001.obj>