ExceptionBinding : Avoid `boost::make_unique`
ExceptionBinding : Avoid `boost::make_unique`

VFXPlatform says we can use `std::make_unique` as of 2018, because that mandates C++14. But we're still supporting C++11 because of certain DCCs. VFXPlatform says we can use `boost::make_unique` as of 2017, because that mandates Boost 1.61. But apparently we're still supporting Boost 1.55 for RV. VFXPlatform needs teeth.

appleseedhq/cortex,appleseedhq/cortex,appleseedhq/cortex