rhg: don't run `blackbox` if not activated
You currently have no way of turning off blackbox. Aside from being a bug, this
can be annoying if you use `rhg` in your shell prompt, but also because the
current implementation of blackbox is quite slow due to `user` querying.
Differential Revision: https://phab.mercurial-scm.org/D11813
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}