tests: add a --dry-run option to lsm-test.
tests: add a --dry-run option to lsm-test.

gjtorikian/lasem,janmarthedal/mathml2svg,wavewave/lasem,gjtorikian/lasem,janmarthedal/mathml2svg,wavewave/lasem,wavewave/lasem,gjtorikian/lasem,janmarthedal/mathml2svg,wavewave/lasem,janmarthedal/mathml2svg,gjtorikian/lasem