svn_oo.Revision.get_log can fail when the message is not unicode

[Curtis Hovey]

The code import for Imagination's SVN is currently failing because there is a commit message that contains bad or unexpected encoding (https://code.launchpad.net/~vcs-imports/imagination/trunk):

    revision, logger=logger, strict=strict, summarize=apply.summary)
  File "/srv/importd.launchpad.net/production/launchpad-rev-12438/lib/cscvs/bzr.py", line 160, in commitWithAutomaticLog
    message = revision.get_log().decode('utf-8', 'replace')
  File "/srv/importd.launchpad.net/production/launchpad-rev-12438/lib/svn_oo/Revision.py", line 114, in get_log
    return self.log['message'].encode('utf8')
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 81: ordinal not in range(128)

This issue is similar to bug 487897 and bug 114034. All might be fixable by ignoring the problem:
    str.encode('UTF-8', 'ignore')

[Max Bowsher (maxb)]

I recall seeing encoding-related fails in many other CSCVS imports too.

I have moved the broken import to https://code.launchpad.net/~vcs-imports/imagination/trunk-cscvs and am recreating a bzr-svn import.

[Robert Collins (lifeless)]

LP now uses bzr-svn for svn imports.