Cpp11 transition

Proposed changes

This list only contains items that can be forgotten to do. Things that have to be replaced anyway because they were removed from fcppt are not listed here.

1. Replace all enums with enum classes, getting rid of the special "type" namespace. Also forward-declare them.
2. Replace fcppt::container::array with std::array
3. Replace std::tr1 with std::
4. Replace boost.thread with std.thread
5. Replace boost.random with std.random
6. Replace boost.type_traits with std.type_traits (boost.mpl's integer comparison structs (like equal_to) have trouble with std type traits)
7. Replace boost/next_prior by the stdlib functions.
8. Replace for(foo::iterator it = ...) loops by range based for
9. Replace ptr containers of types T that are noncopyable by normal containers of movable types, if T is not polymorphic
10. Replace shared_ptrs where we can move unique_ptrs
11. Use lambdas where appropriate, especially to replace extra function objects in detail or anonymous namespaces, or phoenix expressions