added bpchar type
added bpchar type

bigdawg-istc/bigdawg,bigdawg-istc/bigdawg,bigdawg-istc/bigdawg,bigdawg-istc/bigdawg,bigdawg-istc/bigdawg,bigdawg-istc/bigdawg,bigdawg-istc/bigdawg,bigdawg-istc/bigdawg