some OS X changes, general formatting / readability improvements
install an up-to-date Vagrant (just like CLD) as a Media Cloud system package dependency
install "precise64" Vagrant box only when running with the VirtualBox provider
destroy the test virtual machine independent from whether or not it has succeeded or failed in order to save money
be more patient and wait for 360 s (instead of 120 s) for the EC2 instance to start
new AMI
Merge branch 'master' into perl_5_18