Make the debugging stack trace be printed only if DEBUG==true.
Make the debugging stack trace be printed only if DEBUG==true.

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