Unwind: define more interfaces more often

These are also part of the Unwind interfaces.  However, their implementation is
different in EHABI vs frame tables based exception handling.  Always provide a
definition.  This partially undoes a movement change from earlier to make the
handling a bit simpler rather than grouping the two implementations together.

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@231690 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed