Update copyright in recently added files.

This commit also fixes copyright line missed by the automated script.

Author: Masahiko Sawada

src/backend/replication/pgoutput/pgoutput.c

@@ -3,7 +3,7 @@
  * pgoutput.c
  *		Logical Replication output plugin
  *
- * Copyright (c) 2012-2015, PostgreSQL Global Development Group
+ * Copyright (c) 2012-2017, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		  src/backend/replication/pgoutput/pgoutput.c

src/backend/utils/Gen_fmgrtab.pl

@@ -128,7 +128,7 @@ qq|/*-------------------------------------------------------------------------
  * fmgrprotos.h
  *    Prototypes for built-in functions.
  *
- * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * NOTES

src/backend/utils/mmgr/memdebug.c

@@ -5,7 +5,7 @@
  *	  public API of the memory management subsystem.
  *
  *
- * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/backend/utils/memdebug.c