svn commit: r314981 - vendor/libc++/libc++-release_400-r297347

[Dimitry Andric]

Author: dim
Date: Thu Mar  9 22:51:10 2017
New Revision: 314981
URL: https://svnweb.freebsd.org/changeset/base/314981

Log:
  Tag libc++ 4.0.0 release r297347.

Added:
  vendor/libc++/libc++-release_400-r297347/
     - copied from r314980, vendor/libc++/dist/