rdiff: new tempdir config option, useful when rdiff-backup fills up /tmp
i was getting IOError: [Errno 28] No space left on device because my /tmp was to small. and i don't want to set/change the global variables TMPDIR, TEMP, and TMP :)
With this Merge Request we can pass the --tempdir option to rdiff-backup and everything is back in business.
thanks for your awesome work.