swift234

- Fix the diagnostic produced in visitUnresolvedMemberExpr to print the 
  oneof's type, not the type we're trying to infer.  This matches the diagnostic.
- Fix the diagnostic produced by visitUnresolvedMemberExpr when we find
  a non-function element but expect a function, to say so.
- Fix coercing in visitUnresolvedDotExpr to handle the case when we do infer a
  type for the result of the UnresolvedDotExpr.  Even though it isn't helpful, it
  isn't a bad thing to infer things :)
- Fix the logic that I added in an if(0) block to SemaCoerce::visitApplyExpr to
  preserve the "CF_Apply" bit.  Dropping this is bad.
- Move this logic around a bit and enable it!  This allows zapping some terrible
  "syntactic" processing of UnresolvedMemberExpr, and a fixme.

The terrible "syntactic" handling of OverloadSetRefExpr will die next.



Swift SVN r2011