Merge pull request #4 from stronk7/MDLSITE-2096

MDLSITE-2096 Detect unit test files having multiple classes.
MDL-35332 - exclude lib/password_compat/ from checks

Its a third party library
Merge pull request #5 from danpoltawski/password-compat-fix

MDL-35332 - exclude lib/password_compat/ from checks
MDL-38040 Detect CRLFs by the illegal whitespace job.