[PATCH] D21329: Rename and rework `_LIBCPP_TRIVIAL_PAIR_COPY_CTOR`. Move FreeBSD configuration in-tree.

[David Chisnall via cfe-commits]

theraven added a comment.

Looks fine to me, though I wonder if we want to move to the new ABI for FreeBSD11 and use the old one for <=10.


http://reviews.llvm.org/D21329