Patch 6 in a revised series of cleanup patches from Will Schmidt

Patch 6 in a revised series of cleanup patches from Will Schmidt

    Fix multipleinheritance heuristic for ppc64LE (leak_cpp_interior test).
    Adjust the PPC64 #ifdiffery to indicate that ppc64BE uses a thunk table,
    but ppc64LE (in particular, the ELF ABIV2) does not.  In this case, thunk
    table == function descriptors.

    Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
    --

    This patch replaces the previously posted "[6/7] add leak_cpp_interior
    test .exp results ....."

This patch fixes Vagrind bugzilla 347686

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15238