During merging Test<ISA>Regs.java into one case TestRegs.java, we found one
nasty bug. After building frysk, run the following commands:
    #cd $BUILD/frysk-core
    #./TestRunner -l FINE frysk.proc.TestX8664Regs
  The case will pass. The case will pass even if you run "TestRunner -l FINE"
under $BUILD/frysk-core.
  However, if you modify the running sequence of TestX8664Regs in
$BUILD/frysk-core/frysk/core/JUnitTests.java from:
    list.add(frysk.proc.TestRun.class);
    list.add(frysk.proc.TestTaskClonedObserver.class);
    list.add(frysk.proc.TestTaskForkedObserver.class);
    list.add(frysk.proc.TestTaskObserverBlocked.class);
    list.add(frysk.proc.TestTaskObserverDetach.class);
    list.add(frysk.proc.TestTaskObserver.class);
    list.add(frysk.proc.TestTaskSyscallObserver.class);
    list.add(frysk.proc.TestTaskTerminateObserver.class);
    list.add(frysk.proc.TestX8664Modify.class);
    list.add(frysk.proc.TestX8664Regs.class);
to:
    list.add(frysk.proc.TestX8664Regs.class);
    list.add(frysk.proc.TestRun.class);
    list.add(frysk.proc.TestTaskClonedObserver.class);
    list.add(frysk.proc.TestTaskForkedObserver.class);
    list.add(frysk.proc.TestTaskObserverBlocked.class);
    list.add(frysk.proc.TestTaskObserverDetach.class);
    list.add(frysk.proc.TestTaskObserver.class);
    list.add(frysk.proc.TestTaskSyscallObserver.class);
    list.add(frysk.proc.TestTaskTerminateObserver.class);
    list.add(frysk.proc.TestX8664Modify.class);
.
Then you will get the bug like the following:
  Running testX8664Regs(frysk.proc.TestX8664Regs) ...PASS
  Running testCreateAttachedContinuedProc(frysk.proc.TestRun) ...PASS
  Running testCreateAttachedStoppedProc(frysk.proc.TestRun) ...PASS
  Running testTaskCloneObserver(frysk.proc.TestTaskClonedObserver) ...FAIL
    junit.framework.AssertionFailedError: event loop run explictly stopped  
(startChild (Sig_USR1))
  Running testTaskForkedObserver(frysk.proc.TestTaskForkedObserver) ...FAIL
    junit.framework.AssertionFailedError: event loop run explictly stopped
(startChild (Sig_USR1))
  .....