(non)member_ccs(_exact) fail on gcc 4.8, clang 3.9

See f.ex. here: https://travis-ci.org/boostorg/boost/builds/285667073

Start with the Travis CI build linked in the issue and inspect the failures for (non)member_ccs(_exact) under gcc 4.8 and clang 3.9. Identify the affected tests or entry points from that build, then verify that the failures are resolved by rerunning the same compiler checks.

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