ClosureUtils
Merge pull request #423 from bsideup/feature/closure-utils

ClosureUtils
GROOVY-6437: Sql.withTransaction() doesn't rollback on checked exceptions
Merge pull request #426 from paulk-asert/groovy6437

GROOVY-6437: Sql.withTransaction() doesn't rollback on checked exception...
GROOVY-6820: Fix type checker not allowing the Outer.this notation