Makes dava to print ClassConst as pkg.ClassName.class

Right now, it uses the same format as in Jimple:
  class "pkg.ClassName"
which makes the generated .java code uncompilable.

Here's a test case.

ClassConst.java:

public class ClassConst {
  public static void main(String[] args) {
    print(ClassConst.class);
  }

  static void print(Class c) {
    System.out.println(c);
  }
}

Run "soot -f d ClassConst" and look at sootOutput/ClassConst.java. The line print(ClassConst.class); will become print(class "ClassConst"); --- not compilable!