1.59 upcoming release is needed for MSVC 14.0 (aka VS 2015) support.

There is a known breakage on MSVC with boost::none instance in
optional library.  Use not documented define as explained in this
issue upstream [1]: BOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE.

[1] https://svn.boost.org/trac/boost/ticket/11203

Change-Id: I25b1797da93f7959d15a70105d67100e0e2c4b3b
Reviewed-on: https://gerrit.libreoffice.org/17056Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>