drill

46b424cb - DRILL-4862: Fix binary_string to use an injected buffer as out buffer

DRILL-4862: Fix binary_string to use an injected buffer as out buffer + Previously, binary_string used the input buffer as output buffer. So after calling binary_string, the original content was destroyed. Other expressions/ functions that need to access the original input buffer get wrong results. + This fix also sets readerIndex and writerIndex correctly for the output buffer, otherwise the consumer of the output buffer will hit issues. closes #604