Add code coverage to the python version of run-tests (inc. annotation)
Also include a minor work-around to coverage.py to avoid errors about /<string>
abort: impossible time zone offset: 4444444
transaction abort!
rollback completed
abort: invalid date: '1\t15.1'
transaction abort!
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abort: invalid date: 'foo bar'
transaction abort!
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abort: invalid date: ' 1 4444'
transaction abort!
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abort: date exceeds 32 bits: 111111111111
transaction abort!
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abort: No such file or directory: .../test/bar