octave allocator patch

[Rik]

11/6/11

John,

I tried the octave allocator patch you sent out and I get a segfault with
it when running 'make check'.  It's something in the test suite because
just invoking run-octave and doing some test calculations/plots works
fine.  This was with a gnulib pulled on 11/6/11 and a tip
(13834:227130df89eb) from 11/6/11.  This may go away when Michael G.
applies his shared ptr patch.  If it doesn't, though, it's not the fault of
his patch.

--Rik