Fix typo in --prob-contamination option.
Fix --report-genotype-likelihood-max option.
Fix --min-repeat-size option.

Reported by Lance Parsons: http://dev.list.galaxyproject.org/Updated-Freebayes-Wrapper-Bugs-tp4664915.html
Upstream bug: https://github.com/ekg/freebayes/issues/82
Merge pull request #1 from nsoranzo/master

Fix some options.