Release 20090823: Defend against a timing attack. Check whether a nonce is used repeatedly.
Release 20090823:
Defend against a timing attack.
Check whether a nonce is used repeatedly.

git-svn-id: ee4ab06e2b80aa0503c7056b29ac4b88b48aacce@1111 f7ae4463-c52f-0410-a7dc-93bad6e629e8

aoprisan/net.oauth,aoprisan/net.oauth