This commit was manufactured by cvs2svn to create branch 'rich_cons'.

svn path=/branches/rich_cons/boost/boost/tuple/; revision=10928
Added default constructor for cons<>.

svn path=/branches/rich_cons/boost/boost/tuple/; revision=10967
Removed old branches.

svn path=/branches/rich_cons/boost/boost/tuple/; revision=38550