ENG-3838 JSON ARRAY_ELEMENT, ARRAY_LENGTH
ENG-3838 Add json function edge and error test cases, mostly re: r=ssantoro
Merge branch 'master' into ENG-3838-json-array
Merge pull request #389 from VoltDB/ENG-3838-json-array

ENG-3838 JSON ARRAY_ELEMENT, ARRAY_LENGTH