Make bootstrap cache configurable

[kingcrunch]

Hi, it's me again. I've seen a TODO

task :build_bootstrap do
  on release_roles :all do
    within release_path do
      # TODO: does this need to be configurable?
      execute :php, "./vendor/sensio/distribution-bundle/Sensio/Bundle/DistributionBundle/Resources/bin/build_bootstrap.php", fetch(:app_path)
    end
  end
end

I'd say yes. Actually only because I consider dropping the bootstrap-cache entirely, because

• It is the only "part" of the DistributionBundle I use, so I'd like to drop that bundle
• It looses it's benefit, when there is a proper bytecode cache with constant stat-calls

Right now I cannot drop the bundle, because it would break the deployment (as far as I've seen I cannot remove tasks from the flow, right?)

[peterjmit]

As mentioned in #17 you can remove a task from the deployment, it should not cause a problem

Rake::Task['deploy:build_bootstrap'].clear