Updated duplicity to 0.7.08.

>From Fr辿d辿ric Fauberteau in PR 51316.

New in v0.7.08 (2016/07/01)
---------------------------
* Merged in lp:~noizyland/duplicity/fix_azurebackend_typo
  - Fix typo in error handling code
* Merged in lp:~ghoz/duplicity/swift-prefix
  - adds the abiliy to use path in the swift backend, in order to have multiple
    backups to the same container neatly organized.
* Fixed bug #1573957 with patches from Dmitry Nezhevenko
  - upload last chunk with files_upload_session_finish to avoid extra request
  - upload small files using non-chunked api
* Fixed bug #1586934 with patches from Dmitry Nezhevenko
  - fixes error handling in wrapper
* Fixed bug #1586992 with patches from Dmitry Nezhevenko
  - Patch adds _delete_list to Par2Backend. And _delete_list fallbacks to
    _delete calls if wrapped backend has no _delete_list.
* Fixed bug #1589038 with patches from Malte Schr旦der
  - Added ignore_case option to selection functions
* Merged in lp:~mstoll-de/duplicity/b2-reauth
  - Fixes bug #1588503 b2: large uploads fail due to expired auth token
* Merged in lp:~aaron-whitehouse/duplicity/fix_pep8
  - Fix PEP8 error in onedrivebackend.py (space before bracket)
* Fixed bug #822697 ssh-options not passed in rsync over ssh
  - Added globals.ssh_options to rsync command line
* Increased default volume size to 200M, was 25M
* Fixed README-REPO to no longer mention 0.6-series
* Merged in lp:~aaron-whitehouse/duplicity/fix_stat_errors
  - Only give an error about not being able to access possibly locked file if
    that file is supposed to be included or scanned (i.e. not excluded).
    Fixes Bug #1089131
* Fixed bug #1594780 with patches from B. Reitsma
  - Use re.finditer() to speed processing
* Merged in lp:~aaron-whitehouse/duplicity/PEP8_W503_fixes
  - Fix PEP8 W503 errors (line break before binary operator) and enable the
    PEP8 test for this in test_code.CodeTest.
* Merged in lp:~aaron-whitehouse/duplicity/PEP8_line_length
  - Set line length error length to 120 (matching tox.ini) for PEP8 and
    fixed E501(line too long) errors.
* Merged in lp:~duplicity-team/duplicity/po-updates

(wiz)