refactored auto login server part.
copied test codes from sleek.
updated error.
updated fs.
updated error.
updated session server.
updated register and login client.
updated upload.
updated l.merge.
updated pacakge.json.
minor fix.
updated upload to use tmp file.
updated formty.
renames subs to makeDeepPath.
tmpDeleter use tpath instead of tname;
completed porting sleek code.