Fix a few minor mistakes in header comments. From Qingqing Zhou.

src/port/getrusage.c

 /*-------------------------------------------------------------------------
  *
- * getusage.c
- *	  64-bit versions of fseeko/ftello()
+ * getrusage.c
+ *	  get information about resource utilisation
  *
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/getrusage.c,v 1.8 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/getrusage.c,v 1.9 2005/05/16 05:52:13 neilc Exp $
  *
  *-------------------------------------------------------------------------
  */

src/port/gettimeofday.c

 /*
- * $PostgreSQL: pgsql/src/port/gettimeofday.c,v 1.5 2004/06/24 18:53:48 tgl Exp $
+ * gettimeofday.c
+ *	  Win32 gettimeofday() replacement
+ *
+ * $PostgreSQL: pgsql/src/port/gettimeofday.c,v 1.6 2005/05/16 05:52:13 neilc Exp $
  *
  * Copyright (c) 2003 SRA, Inc.
  * Copyright (c) 2003 SKC, Inc.