Add NullArrayRef transformer.
Add NullArrayRef transformer.


cfallin/soot,anddann/soot,cfallin/soot,mbenz89/soot,anddann/soot,plast-lab/soot,cfallin/soot,anddann/soot,mbenz89/soot,mbenz89/soot,xph906/SootNew,xph906/SootNew,mbenz89/soot,anddann/soot,cfallin/soot,xph906/SootNew,plast-lab/soot,plast-lab/soot,xph906/SootNew