Beman/filesystem-proposal — pull request #3 by jyasskin (2012-10-22 16:37:17+00:00)
Title: Fix build with Clang on Mac OS.

After this change, operations_test.run and operations_test_static.run fail, but the rest seem to pass. This all requires an updated libc++ to be installed, not just the one that comes with OS X 10.8.