.jshintrc

match: let regex match function return a boolean

Match function for regex pattern kind is built through
_buildregexmatch() and _buildmatch() using _rematcher() that returns a
re.match function, which either returns a match object or None. This
does not conform to Mercurial's matcher interface for __call__() or
exact(), which are expected to return a boolean value. We fix this by
building a lambda around _rematcher() in _buildregexmatch().

Accordingly, we update doctest examples to remove bool() calls that are
now useless.

{
    // 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)
}