bumped up the source and target versions to Java 1.7.
bumped up the source and target versions to Java 1.7.

mbenz89/soot,plast-lab/soot,mbenz89/soot,anddann/soot,plast-lab/soot,anddann/soot,plast-lab/soot,anddann/soot,mbenz89/soot,anddann/soot,mbenz89/soot