GROOVY-6219: Inferred return type of closures used as method call parameters is not used in method selection
GROOVY-5898: Sql.java throws IllegalStateException when comments contain quotes
fix handling of unterminated quote at end of string
Merge pull request #212 from jwagenleitner/GROOVY-5898

GROOVY-5898: Sql.java throws IllegalStateException when comments contain quotes
improve test robustness
improve build robustness