As of 4.3, gcc/g++ has many deprecated inclusions that should be phased out

As we compile ember pretty much exclusively using g++ we will need to stop using the deprecated entities/includes. I have included the small snip of the backward_warning.h file which documents the specific changes required. Some of these will be trivial, but some ( like auto_ptr ) are riddled throughout the code. We will need to make sure that these structures will serve as drop in replacements.

/*
  A list of valid replacements is as follows:

  Use: Instead of:
  <sstream>, basic_stringbuf <strstream>, strstreambuf
  <sstream>, basic_istringstream <strstream>, istrstream
  <sstream>, basic_ostringstream <strstream>, ostrstream
  <sstream>, basic_stringstream <strstream>, strstream
  <unordered_set>, unordered_set <ext/hash_set>, hash_set
  <unordered_set>, unordered_multiset <ext/hash_set>, hash_multiset
  <unordered_map>, unordered_map <ext/hash_set>, hash_map
  <unordered_map>, unordered_multimap <ext/hash_set>, hash_multimap
  <functional>, bind <functional>, binder1st
  <functional>, bind <functional>, binder2nd
  <functional>, bind <functional>, bind1st
  <functional>, bind <functional>, bind2nd
  <memory>, unique_ptr <memory>, auto_ptr
*/