jsfunfuzz: Improve the way we examine builtin objects. Consolidate 'random property name' functions so they all use the discovered names.
jsfunfuzz: Improve the way we examine builtin objects. Consolidate 'random property name' functions so they all use the discovered names.

nth10sd/funfuzz,MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz