dirstate-item: add dedicated "legacy" constructor for `addfile` case
This way the internal details of how a DirstateItem is encoded is encapsulated
within the DirstateItem. This will finally give use some latitude to change the
data we store in a DirstateItem.
The addfile logic will likely be rewritten eventually and these dedicated
constructor can be removed at that time.
In the mean-time this should help with hiding internal details of DirstateItem
and to migrate it to new internal storage and logic.
Differential Revision: https://phab.mercurial-scm.org/D11330
{
// 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)
}