[analyzer] Add very limited support for temporary destructors

Summary:
This patch enables ExprEndgine to reason about temporary object destructors.
However, these destructor calls are never inlined, since this feature is still
broken. Still, this is sufficient to properly handle noreturn temporary
destructors and close bug #15599. I have also enabled the cfg-temporary-dtors
analyzer option by default.

Reviewers: jordan_rose

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1131

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@186498 91177308-0d34-0410-b5e6-96231b3b80d8