For "$obj->{__FUNCTION__}" and "$obj->{__CLASS__}", we currently don't
recognize __FUNCTION__ and __CLASS__ as "magic constants" and we just use
the literal strings "__FUNCTION__" and "__CLASS__" for the property names.
This is wrong. Same goes for object method calls (ex. "$obj->{..}(..)").
This diff fixes HipHop to recognize magic constants for properties names in
"$obj->{..}" expressions and method names in "$obj->{..}(..)" expressions.
This change is mostly for FB internal organizational reasons.
Building is not effected beyond the fact that the target now
lands in hphp/hhvm/hhvm rather than src/hhvm/hhvm.
jan