Bug 1030938.  Stop copy-constructing iterators in SavedStacks code, because that copy constructor is really slow.  Also, hash atoms as pointers, not strings.  r=shu
Bug 1006595 - Add some APIs on inIDOMUtils to allow determining the subproperties of a CSS shorthand, whether a property is a shorthand, and whether a given property supports a given type of value.  r=dbaron