After sleeping on it I've decided that all special members that can be noexcept, should be declared so.  The client has the traits to detect and branch on this information, and it is often an important optimization.  Give deque() a noexcept.  Add test for deque default constructor and deque destructor.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132549 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed