Add specs for error inside to_hash of keyword args
Improve keyword arguments coercion and fix GC crash
Removed README notice of kwargs being unsupported

These were implemented a while ago.
Make JIT inline cast_for_multi_block_arg correctly

(Bug originally found in rbx-1.3.3)

JIT was not inlining arguments correctly when given more than one
argument, and would end up yielding cUndef (Object:0x22) instead.

See https://gist.github.com/sshao/7eecc87458d3e55d7f5d
(run on rbx-1.3.3) for examples.
Basic infrastructure for Rubinius Console.
Added skeleton of Rubinius::Console.
Write Console output to response file.
Added detection for kqueue, inotify.
Added basic features for Rubinius::FSEvent.
Added -Xvm.fsapi_path.
Switched to local kevent struct for event.
Improved Console::Server functions.
Added stubs for FSEvent with inotify.
Fixed creating Console files for forking.
Added finalizer for FSEvent.
Set state after fork to initial state.

When the would starts, should_stop_ is 0, pending_threads_ is 0. Setting
should_stop_ to 1 after fork() could result in a thread with run_state_
eAlone, pending_threads_ 0, and the world would never stop waiting to GC.
Added basic logging facility.
Added simple flock LockGuard utility.
Added logging to Console.
Fixed setting FSAPI path.