Standard adherence change to build with clang 3.1
Standard adherence change to build with clang 3.1

See: http://stackoverflow.com/questions/9122065/is-this-non-copyable-map-legal-c11-gcc-4-7-and-msvs-2010-allow-it-clang-3-1

jbcoe/CppSandbox,hanw/cppsandbox,jbcoe/CppSandbox,hanw/cppsandbox,jbcoe/CppSandbox,hanw/cppsandbox