amd64 patches for review again

[Matthew Dillon]

:hey,
:
:now that we branched 1.6 i want to commit these patches.  please review a=
:nd if nobody objects, i will commit them on saturday.
:
:find them at: <http://chlamydia.fs.ei.tum.de/~corecode/unsorted/amd64.dif=
:f>
:
:cheers
:  simon

    The only bit I don't understand is this one in
    gnu/usr.bin/cc34/cc_prep/config/dragonfly-spec.h:

+#define LIBGCC_SPEC "%{shared: -lgcc_pic} %{!shared: -lgcc}"

						-Matt