[PATCH] pidhashing: retain older vendor copyright

I was informed that the vendor component of the copyright can't be clobbered
without more care, so this patch retains the older vendor, updating it only to
reflect the appropriate time period.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/pid.c

 /*
  * Generic pidhash and scalable, time-bounded PID allocator
  *
- * (C) 2002-2004 William Irwin, Oracle
+ * (C) 2002-2003 William Irwin, IBM
+ * (C) 2004 William Irwin, Oracle
  * (C) 2002-2004 Ingo Molnar, Red Hat
  *
  * pid-structures are backing objects for tasks sharing a given ID to chain