Add uninstall stanza for Jawbone Updater

[alebcay]

Uninstalls four packages from the system. I attempted to use regular expressions, but they weren't working, so I hard-coded it.

[rolandwalker]

Hold this one. I believe that using multiple :pkgutil works on the master branch but not in release.

[alebcay]

I test all the Casks I submit from my production setup (brew install phinze/cask/brew-cask ; brew cask install <someLocalTweakedCaskFile>), and this worked without a hiccup.

caleb@caleb:/Volumes/MacData/homebrew/homebrew-cask/developer/bin$ cask rm jawbone-updater
==> Running uninstall process for jawbone-updater; your password may be necessar
==> Removing files from pkgutil Bill-of-Materials
==> Running uninstall process for jawbone-updater; your password may be necessar
==> Removing files from pkgutil Bill-of-Materials
==> Running uninstall process for jawbone-updater; your password may be necessar
==> Removing files from pkgutil Bill-of-Materials
==> Running uninstall process for jawbone-updater; your password may be necessar
==> Removing files from pkgutil Bill-of-Materials

[rolandwalker]

That's good to know, and reveals a bug. What was broken until #3217 was the form

  uninstall :pkgutil => [
                          'com.Aliph.jawbone.pkg',
                          'com.Aliph.JawboneUpdater.pkg',
                          'com.Aliph.jawboneUpdater.preflight.pkg',
                          'com.Aliph.jawboneUpdater.postflight.pkg',
                         ]

The bug is: the DSL treats uninstall as an artifact type, just like link or install. Multiple artifacts are permitted by default, so multiple uninstall directives are permitted.

However, the uninstall has an implicit order-of-operations. The docs claim that the order
in which uninstall keys appear in the Cask file is ignored. The reasons for the order are explained in comments here.

When there are multiple uninstall directives, the order-of-operations is not respected.

Since you only use the same operation :pkgutil in each uninstall, order of operations doesn't matter, and this Cask will work OK. But I need to do a quick scan for Casks that use this syntax, and fix the underlying bug.

[rolandwalker]

To find the packages matching a regexp, you can do pkgutil --pkgs='REGEXP'. I should make a devscript wrapper for that.

I suspect that what tripped you up with this regexp was the "J" being in both upper and lower case. This form worked for me:

  uninstall :pkgutil => 'com.Aliph.[Jj]awbone(|Updater.*).pkg'

I suppose we should start anchoring those regexps with ^ and escaping the literal dots.