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

svn path=; revision=16188
Preliminary changes after review

svn path=; revision=16291
many path related review comments applied

svn path=; revision=16394
directory_iterator simplification

svn path=; revision=16424
add concept check on iterators

svn path=; revision=16425
refresh path functionality and names

svn path=; revision=16446
Initial commit

svn path=; revision=16583
Final post-review changes

svn path=; revision=16590
Removed old branches.

svn path=; revision=38550