Layout tests fail

[Pavel Sanda]

Hi Juergen,

since c962f7b8708 make check fails:
FAIL: tests/test_layout

There are multiple reports for roundtrip problems in test_layout.log
e.g.:
Testing ./../lib/layouts/achemso.layout...
Round trip for style Abbreviations failed:
Style "Abbreviations"
...
Testing ./../lib/layouts/europasscv.layout...
Round trip for style MotherTongue failed:
Style "MotherTongue"
...

Pavel