cleaned up some of the casts as a result of Mats' review.
(transferred from "2005/12/10 22:31:58-06:00 reggie@fedora.(none)"
and from "2006/01/03 22:37:24-06:00 reggie@fedora.(none)")


sql/log_event.cc:
  Some casts to make Visual 2005 happy;
  cleaned up some of the casts as a result of Mats' review.
  (transferred from "2005/12/10 22:31:58-06:00 reggie@fedora.(none)"
  and from "2006/01/03 22:37:24-06:00 reggie@fedora.(none)")
sql/log_event.h:
  Actually return a bool expression instead of assuming a pointer expression is boolean.
  (transferred from "2005/12/10 22:31:58-06:00 reggie@fedora.(none)")
sql/sql_class.cc:
  Some casts to make Visual 2005 happy.
  (transferred from "2005/12/10 22:31:58-06:00 reggie@fedora.(none)"
  and from "2006/01/03 22:37:24-06:00 reggie@fedora.(none)")