bind: silence warning with gcc
Merge branch 'topic/silence_warning' of https://github.com/timblechmann/bind into develop
Fixed mem_fn_eq_test to work with /OPT:ICF as per the patch in #8734 by Mike Liang.
Switch to BOOST_STATIC_ASSERT in arg.hpp per the patch in #8844.
Merge commit 'f7e101e928c745199436374f944f0438b97dee28' into develop
Link to compose from old version of boost.

Compose isn't included in modular boost, so there's nothing to link to.
I changed it to link to an old version which still has compose
documentation. It might be better to rewrite it?
Merge pull request #3 from danieljames/develop

Link to compose in old version of boost.
Merge branch 'develop' of https://github.com/boostorg/bind into develop
Merge branch 'develop'