Workaround for broken 'fiber' library load on 1.6.5

fiber_fix.rb

# I merged across a change in the package name for FiberExtLibrary but did
# not merge across a subsequent change to load the library from that package.
# The following change loads the extension associated with the 'fiber'
# library directly.

# If you are using the 'fiber' library, rescue that require with this code.
# My apologies on such a stupid regression :)

require 'jruby'

org.jruby.ext.fiber.FiberExtLibrary.new.load(JRuby.runtime, false)

class org::jruby::ext::fiber::ThreadFiber
  field_accessor :state
end

class Fiber
  def alive?
    JRuby.reference(self).state != org.jruby.ext.fiber.ThreadFiberState::FINISHED
  end
end