Implement C++11 Variadic Templates based list.
Move fixed-size fusion::vector into cpp03 directory.

To prepare implementing c++11 variadic templates based fusion::vector.
Move fixed-size fusion::set into cpp03 directory.

To prepare implementing c++11 variadic templates based fusion::set.
Move fixed-size generators into detail
Split c++14 like integer_sequence into support/detail.
wip