Re: [boost] [release] 1.76.0 post-beta merges

John Maddock wrote:

I've had a request to merge these new Boost.Config feature checks to release as Serialization depends on them: https://github.com/boostorg/config/pull/369

Also related to Serialization, this bugfix for BOOST_HAS_HASH should probably go in: https://github.com/boostorg/config/pull/374.

OK to merge both. Glen