Merging r200954:

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r200954 | richard-llvm | 2014-02-06 15:35:16 -0800 (Thu, 06 Feb 2014) | 9 lines

Temporary fix for PR18473: Don't try to evaluate the initializer for a
type-dependent variable, even if the initializer isn't value-dependent.  This
happens for ParenListExprs composed of non-value-dependent subexpressions, for
instance.

We should really give ParenListExprs (and InitListExprs) the type of the
initialized entity if they're used to represent a dependent initialization (and
if so, set them to be type-, value- and instantiation-dependent).

llvm-svn: 204050