debugdiscovery: add flags to run discovery on subsets of the local repo
Generating new repository using strip of local clone is very expensive for large
repositories. And such large repository are the most likely to requires
debugging around discovery. So we add a simple way to run discovery using
provided sets of heads.
Differential Revision: https://phab.mercurial-scm.org/D9945
{
// 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)
}