ProcLaunch v1.2

Just a few bug fixes this time:

• When you send proclaunch SIGHUP, it will send all of the profiles their respective stop signals and then wait for them to shut down. You can tell proclaunch to stop without waiting by sending SIGHUP again.
• You can pass the --log-path command line option to change where proclaunch writes it's log. By default this is $profile_dir/error.log

Get it from github! These changes were generously sponsored by Zipline Games, who are using proclaunch to launch lua mongrel2 handlers as part of their Moai Cloud platform.