Rev 1458: Emit warning to trace file only if using cElementTree. in /home/mbp/work/bzr.dev

[Martin Pool]

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revno: 1458
revision-id: mbp at sourcefrog.net-20051201003331-e26c04e018bcfc51
parent: mbp at sourcefrog.net-20051130064100-50469cf3ee5f42b2
committer: Martin Pool <mbp at sourcefrog.net>
branch nick: bzr.dev
timestamp: Thu 2005-12-01 11:33:31 +1100
message:
  Emit warning to trace file only if using cElementTree.
modified:
  bzrlib/xml.py                  xml.py-20050309040759-57d51586fdec365d