libstdc++-v3/ChangeLog:

2015-08-11  Caroline Tice <cmtice@google.com>

        PR 66521, Contributed by Eric Gallager
        * acinclude.m4 (VTV_CXXLINKFLAGS): Make this variable OS-specific, and
        fix the rpath flag to work properly for darwin.
        * configure: Regenerated.

From-SVN: r226820