Cherrypick some unordered container changes from sandbox. Not including
anything which depends on the new move library.
r52746 | danieljames | 2009-05-03 11:12:30 +0100 (Sun, 03 May 2009) | 1 line
Merge latest unordered container changes.
r52747 | danieljames | 2009-05-03 11:15:35 +0100 (Sun, 03 May 2009) | 4 lines
Put the C++0x emplace implementations before the non-C++0x versions.
I'm going to change the non-C++0x to be macro heavy emulations of the
C++0x versions, so this will put the readable version first.
r52748 | danieljames | 2009-05-03 11:15:44 +0100 (Sun, 03 May 2009) | 1 line
Refactor the unordered implementation a tad, to make implementing emplace less painful.
