Fix Boost bind deprecation warning

Fix Boost bind deprecation warning

Original warning:
boost/bind.hpp:36:1: note: ‘#pragma message: The practice of declaring the Bind placeholders (_1, _2, ...) in the global namespace is deprecated. Please use <boost/bind/bind.hpp> + using namespace boost::placeholders, or define BOOST_BIND_GLOBAL_PLACEHOLDERS to retain the current behavior.’

Use <boost/bind/bind.hpp> with boost::placeholders for Boost 1.46+.
Fall back to <boost/bind.hpp> for Boost 1.44 (no deprecation warning in that version).