mac: Actually include libc++ headers in clang package.

tools/clang/scripts/package.sh

 #!/bin/bash
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script will check out llvm and clang, and then package the results up
 # to a tgz file.
 
 gcc_toolchain=
 
@@ skipping 140 matching lines @@
   # , but not dfsan.
   find "${LLVM_LIB_DIR}/clang" -type f -path '*lib/linux*' \
        ! -name '*[atm]san*' ! -name '*ubsan*' ! -name '*libclang_rt.san*' \
        ! -name '*profile*' | xargs rm
   # Strip the debug info from the runtime libraries.
   find "${LLVM_LIB_DIR}/clang" -type f -path '*lib/linux*' | xargs strip -g
 fi
 
 cp -R "${LLVM_LIB_DIR}/clang" $PDIR/lib
 
-tar zcf $PDIR.tgz -C $PDIR bin lib buildlog.txt
+if [ "$(uname -s)" = "Darwin" ]; then
+  tar zcf $PDIR.tgz -C $PDIR bin include lib buildlog.txt
+else
+  tar zcf $PDIR.tgz -C $PDIR bin lib buildlog.txt
+fi
 
 if [ "$(uname -s)" = "Darwin" ]; then
   PLATFORM=Mac
 else
   PLATFORM=Linux_x64
 fi
 
 echo To upload, run:
 echo gsutil cp -a public-read $PDIR.tgz \
      gs://chromium-browser-clang/$PLATFORM/$PDIR.tgz