eol: fix update - don't use and apply removed .hgeol patterns
'hg up -C' to revisions with different .hgeol patterns could leave dirty
changes in the working directory. That could make deployment of new .hgeol
filters tricky: they would "occasionally" apply also in branches where they
shouldn't.
Fixed by dropping all old patterns before applying new ones.
{
// 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)
}