nlojet: compile with c++11

pkgs/development/libraries/physics/nlojet/default.nix

···
     ./nlojet_clang_fix.patch
   ];
 
+  env.CXXFLAGS="-std=c++11";
+
   # error: no member named 'finite' in the global namespace; did you mean simply 'finite'?
   env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";