Premature optimization...but still...JRuby knows if strings are 7bit clean ascii so avoid rescanning by oj in dump.  This should be added for all modes.
Premature optimization...but still...JRuby knows if strings are 7bit clean
ascii so avoid rescanning by oj in dump.  This should be added for all modes.

enebo/oj,enebo/oj,enebo/oj,enebo/oj