[PATCH 1 of 2] lazymanifest: fix pure hg iterkeys()

[Siddharth Agarwal]

On 03/12/2015 07:26 PM, Martin von Zweigbergk wrote:
> +    def iterkeys(self):
> +        return (f for f in sorted(dict.iterkeys(self)))
> +

Maybe better written as

keys = self.keys()
keys.sort()
return iter(keys)