swift234

[Constraint application] Convert the base of a member access base to the type containing that member.

Previously, we were making the distinction between
generic/archetype/existential/normal member access based on the type
of the object, rather than the type containing the member. Amusingly,
we got this right with the rewrite of subscript handling.
Fixes <rdar://problem/13924673>.


Swift SVN r5255