added: config workaround for clang 3.4+ and boost < 1.56 (upd)
added: config workaround for clang 3.4+ and boost < 1.56 (upd)

regnirpsj/hugh-build-system,regnirpsj/hugh-build-system,regnirpsj/hugh-build-system,regnirpsj/hugh-build-system