laravel/framework — pull request #3335 by ronnorthrip (2014-01-23 17:31:55+00:00)
Title: Changed supportBoris to check for pcntl

Boris also requires the pcntl php extension, so we should check if its there before using Boris for tinkering. Since I don't have pcntl on my mac it impacts me and I'd like to use the fallback tinker. Thanks.