not propagating into functions handled exclusively by the taint wrapper anymore when performing a backwards alias search
1) added some more taint wrapper entries
2) added profiling code to the taint wrappers to count hits/misses
3) added an "aggressive" option to the EasyTaintWrapper
code cleanup
now skipping calls to source methods that are not actually sources, because they don't taint anything
Pulled up interface for InfoflowCFG

Conflicts:
	src/soot/jimple/infoflow/problems/InfoflowProblem.java