Add support for native (JNI) calls to the trace tools.

Also fix a bug in profile_pid.cpp and add better output to
stack_dump.cpp.

emulator/qtools/profile_pid.cpp

@@ -84,10 +84,11 @@ int main(int argc, char **argv) {
     printf("%5d  %5d %10llu %6.2f %6.2f %5s %s",
            pstate->pid, pstate->parent_pid, pstate->cpu_time,
            per, sum_per, print_flags, pstate->name);
-    for (int ii = 1; ii < pstate->argc; ++ii) {
-      printf(" %s", pstate->argv[ii]);
+    for (int jj = 1; jj < pstate->argc; ++jj) {
+      printf(" %s", pstate->argv[jj]);
     }
     printf("\n");
   }
+  delete trace;
   return 0;
 }