Flip the switch to use OffsetOfExpr unconditionally; feel free to revert if this breaks something.
Flip the switch to use OffsetOfExpr unconditionally; feel free to revert if
this breaks something.

I'll wait a few days before cleaning out UnaryOperator::OffsetOf.



git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@110328 91177308-0d34-0410-b5e6-96231b3b80d8

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