Change the base class of std::bad_optional_access.  This is a (subtle) ABI change, and is in response to http://http://wg21.link/LWG2806, which I *expect* to be adopted in Kona. I am making this change now in anticipation, and will get it into 4.0, because (a) 4.0 is the first release with std::optional, and (b) I don't want to make an ABI-change later, when the user base should be significantly larger. Note that I didn't change std::experimental::bad_optional_access, because that's still specified to derive from std::logic_error.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@294133 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed