Merge branch 'develop'
Merge branch 'develop'
Added macro BOOST_NO_CXX11_REF_QUALIFIERS
Merge branch 'master' of https://github.com/akrzemi1/config into develop
Add BOOST_NO_CXX11_REF_QUALIFIERS to more (mostly obsolete) compilers.
Fix <regex> test case.
Merge branch 'develop' of https://github.com/boostorg/config into develop