Reexport operator new / delete from libc++abi

Both libc++ and libc++abi export a weak definition of operator
new/delete. On Darwin, this can often cause dirty __DATA in the
shared cache when having to switch from one to the other. Instead,
libc++ should reexport libc++abi's implementation of these symbols.

Patch by: Ted Kremenek <kremenek@apple.com>

Differential Revision: https://reviews.llvm.org/D30765

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@299054 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed