build difficulty

[dk122 at torfree.net]

I am unable to build (after `make clean`) master 139a7d2 (pulled today
around 12:30 UTC).  The messages are, line-wrapped for e-mail, ...

     /home/terry/lo_hacking/git/libo2/workdir/unxlngi6/UnpackedTarball/
         boost/boost/noncopyable.hpp:27:21:
         error: ‘boost::noncopyable_::noncopyable::noncopyable()’ declared
         with non-public access cannot be defaulted in the class body
     /home/terry/lo_hacking/git/libo2/workdir/unxlngi6/UnpackedTarball/
         boost/boost/noncopyable.hpp:28:22:
         error: ‘boost::noncopyable_::noncopyable::~noncopyable()’
         declared with non-public access cannot be defaulted in the class body

I have to suspect that this has something to do with commit 4910c54
"Update the bundled boost to 1.54" combined with the fact that I am
building on an old release, ubuntu-natty (11.04) 32-bit.

Suggestions welcome.

Thanks,
Terry.