[boost] [iterator] marking is_lvalue_iterator expected failure on HP-UX/aCC6

iterator library test is_lvalue_iterator fails to compile on HP-UX/aCC6 (this is the only failing test in iterator library on this platform). I have not had a chance to investigate the failure and, consequently, don't have a small reproducer. What I do know though is that this test compiles cleanly in strict ansi mode. Would it be possible to mark this test as expected failure for HP-UX/aCC6 (toolset "acc") in both 1.34 and HEAD with the following remark (feel free to edit it): "For some currently unknown reason, with aCC6, this test can be compiled only in strict ansi mode. Since on HP-UX/aCC6 boost testing is done in the default compilation mode, this test fails to compile on this platform." Thanks, Boris