Fix Option camel case in error message
Fix Option camel case in comments
Fix Option camel case in xfailed/ignored tests
Fix Option camel case in debug messages
Fix Option camel case in commented portion of test
Fix Option camel case in a compile-fail test

The compile fails for another reason, that triggers before the the failure for non-camel cased option, some or none undefined errors.
Merge pull request #4644 from martica/camel-case-option

Update more uses of Option, Some and None to camel case