tests: *todo* and *fail* marked as skiped in the XML juint file
tests: *todo* and *fail* marked as skiped in the XML juint file

There is no way, in the JUnit format to distinguish between *expected
success* and *expected failure*.
But there is a distinction between *run* and *skipped* (shown as green and
yellow by Jenkins).
This hack overload the currently useless *skipped* status to mark expected
failure (todo and fixme).

Signed-off-by: Jean Privat <51f8b1fa9b424745378826727452997ee2a7c3d7@pryen.org>

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