[boost] Borland const/partial specialization weirdness?

I'm rather confused over the tuple_test_bench failure in Borland 5.6.4: http://www.boost.org/regression-logs/cs-win32_metacomm/developer/output/bin-... Borland supports partial specialization, but I seem to remember some weirdness with its handling of cv-qualifiers in partial specializations. Does anyone know if this is the case, or how the weirdness goes? Doug