Explicitly say we don't define new/delete in libc++ during Apple stage1 bootstrap
Explicitly say we don't define new/delete in libc++ during Apple stage1 bootstrap

This is not necessary in stage2 because we don't even build libc++.dylib
there.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@358582 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang