Check comparisons for very negative numbers as well.
Check comparisons for very negative numbers as well.

Merged from patch by @sebastianmika.

moander/JSON-Schema-Test-Suite,neomadara/JSON-Schema-Test-Suite,atomiqio/json-schema-test-suite,WHenderson/ex-json-schema,json-schema-org/JSON-Schema-Test-Suite,epoberezkin/JSON-Schema-Test-Suite,atomiqio/json-schema-test-suite,epoberezkin/JSON-Schema-Test-Suite,json-schema/JSON-Schema-Test-Suite,WHenderson/ex-json-schema,mafintosh/JSON-Schema-Test-Suite,Relequestual/JSON-Schema-Test-Suite