swift234

Land a pretty big conceptual/API change to pave the way for multiple
return values.  Now the base class of the value hierarchy is "ValueBase"
instead of "Value", and "Value" is now a PointerIntPair indicating the
ValueBase (e.g. an instruction) being referenced along with what result
value is being referenced.

By default, any place you used "Value*" before, you should now use "Value".


Swift SVN r3207