Update copyright year.

Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/CA%2BhUKGJFWXmtYo6Frd77RR8YXCHz7hJ2mRy5aHV%3D7fJOqDnBHA%40mail.gmail.com

src/backend/lib/integerset.c

@@ -61,7 +61,7 @@
  *   (https://doi.org/10.1002/spe.948)
  *
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION

src/backend/libpq/be-gssapi-common.c

@@ -3,7 +3,7 @@
  * be-gssapi-common.c
  *     Common code for GSSAPI authentication and encryption
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION

src/backend/libpq/be-gssapi-common.h

@@ -3,7 +3,7 @@
  * be-gssapi-common.h
  *       Definitions for GSSAPI authentication and encryption handling
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/include/libpq/be-gssapi-common.h

src/backend/libpq/be-secure-gssapi.c

@@ -3,7 +3,7 @@
  * be-secure-gssapi.c
  *  GSSAPI encryption support
  *
- * Portions Copyright (c) 2018-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 2018-2019, PostgreSQL Global Development Group
  *
  *
  * IDENTIFICATION

src/interfaces/libpq/fe-gssapi-common.c

@@ -3,7 +3,7 @@
  * fe-gssapi-common.c
  *     The front-end (client) GSSAPI common code
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION

src/interfaces/libpq/fe-gssapi-common.h

@@ -4,7 +4,7 @@
  *
  *      Definitions for GSSAPI common routines
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * src/interfaces/libpq/fe-gssapi-common.h

src/interfaces/libpq/fe-secure-gssapi.c

@@ -3,7 +3,7 @@
  * fe-secure-gssapi.c
  *   The front-end (client) encryption support for GSSAPI
  *
- * Portions Copyright (c) 2016-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 2016-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *  src/interfaces/libpq/fe-secure-gssapi.c