Unreviewed libgcc build patch

[Rainer Orth]

The following patch

        [build, libgcc] Correctly apply c_flags in shared-object.mk
        http://gcc.gnu.org/ml/gcc-patches/2011-06/msg01055.html

has remained unreviewed for a week.  It needs a libgcc or build
maintainer to review.

Thanks.
        Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University