value.t: avoid smoke test failure expecting qr//...

This is dumb and does not behave the same way across Perl versions
v2.060

  Bug fix release:

    * value.t: avoid smoke test failures
    * Avoid new perl 5.20 warning (Debian #758320)
    * Value: improved notify change message (computed vs preset vs default)
    * fix pod doc in cme (RT 97605, Debian #756433)
    * depends directly on YAML, not YAML::Any which will be deprecated