new directory structure
Merge branch 'master' of https://github.com/ithlony/Boost.Trie
use std::allocator<T> as temp allocator, in order to concentrate on
developing trie itself...
bjam settings need to be set up correctly
there's something wrong when inserting a new child into a trie_node, the
allocator must be blamed for
the problem of creating a new node seem to be solved, the std::allocator
works well now