Add version-dependent mechanism to avoid boost global placeholder deprecation

[timcnicholls]

This PR addresses the issue with deprecation warnings during build that boost placeholders should not be imported into the global namespace.

The suggested fix for this, i.e. #include <boost/bind/bind.hpp> and using namespace boost::placeholders, is not compatible with the full range of OS/Boost/Cmake versions targeted by odin-data. This is because the placeholders namespace did not appear in boost until 1.60.0 (EL7 is 1.53.0), and that the use of placeholders in boost::property_tree didn't get updated until 1.76.0 (q.v. Ubuntu 22.04, EL9 variants have boost 1.75.0). Furthermore the expansion of the Boost version in the CMake finder varies in behaviour. The following changes are implemented:

• CMake version independent checking of boost version and setting a compiler define flag BOOST_HAS_PLACEHOLDERS when the namespace is present (v >= 1.60.0)
• Use of that flag where necessary in the code
• Set the BOOST_BIND_GLOBAL_PLACEHOLDERS flag in the integration test build where boost::property_tree is used

Clean compilation has been checked on EL7, Ubuntu 22.04 and AlmaLinux 9.

[timcnicholls]

CI test job failing due to apt repo timeouts? Push job on branch passed.

[GDYendell]

Yeah I think it might be a problem with the runners. Hopefully it will resolve itself.

[GDYendell]

This needs rebasing to remove 201f71d before merging because I amended the base branch.

[timcnicholls]

Done. PR CI job failed (again) though the push job passed.