Log Message:
Update to duplicity-0.4.10.

New in v0.4.10 (2008/03/27):
bug #22728: FTP backend fails on empty directory
patch #6374: Duplicity --tempdir patch documentation.
patch #6375: Duplicity reports the epoch for a nonexistant last full backup date
patch #6380: add additional named logging levels
patch #6389: Possible Fix for pagefile.sys on Win32 systems
patch #6403: Restore by overwriting files/directories by using --force option
patch #6449: add additional debug level logging
patch #6453: handle absolute urls in webdav backend