Update copyright for 2016

On closer inspection, the reason copyright.pl was missing files is
that it is looking for 'Copyright (c)' and they had 'Copyright (C)'.
Fix that, and update a couple more that grepping for that revealed.

contrib/auth_delay/auth_delay.c

@@ -2,7 +2,7 @@
  *
  * auth_delay.c
  *
- * Copyright (C) 2010-2011, PostgreSQL Global Development Group
+ * Copyright (c) 2010-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		contrib/auth_delay/auth_delay.c

src/test/modules/test_ddl_deparse/test_ddl_deparse.c

@@ -2,7 +2,7 @@
  * test_ddl_deparse.c
  * 		Support functions for the test_ddl_deparse module
  *
- * Copyright (C) 2014-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2014-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/test/modules/test_ddl_deparse/test_ddl_deparse.c

src/test/modules/test_rls_hooks/test_rls_hooks.c

@@ -3,7 +3,7 @@
  * test_rls_hooks.c
  *		Code for testing RLS hooks.
  *
- * Copyright (C) 2015-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2015-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/test_rls_hooks/test_rls_hooks.c

src/test/modules/test_rls_hooks/test_rls_hooks.h

@@ -3,7 +3,7 @@
  * test_rls_hooks.h
  *		Definitions for RLS hooks
  *
- * Copyright (C) 2015-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2015-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/test_rls_hooks/test_rls_hooks.h

src/test/modules/test_shm_mq/setup.c

@@ -5,7 +5,7 @@
  *		number of background workers for shared memory message queue
  *		testing.
  *
- * Copyright (C) 2013-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2013-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/test_shm_mq/setup.c

src/test/modules/test_shm_mq/test.c

@@ -3,7 +3,7 @@
  * test.c
  *		Test harness code for shared memory message queues.
  *
- * Copyright (C) 2013-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2013-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/test_shm_mq/test.c

src/test/modules/test_shm_mq/test_shm_mq.h

@@ -3,7 +3,7 @@
  * test_shm_mq.h
  *		Definitions for shared memory message queues
  *
- * Copyright (C) 2013, PostgreSQL Global Development Group
+ * Copyright (c) 2013-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/test_shm_mq/test_shm_mq.h

src/test/modules/test_shm_mq/worker.c

@@ -9,7 +9,7 @@
  *		but it should be possible to use much of the control logic just
  *		as presented here.
  *
- * Copyright (C) 2013-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2013-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/test_shm_mq/worker.c

src/test/modules/worker_spi/worker_spi.c

@@ -13,7 +13,7 @@
  * "delta" type.  Delta rows will be deleted by this worker and their values
  * aggregated into the total.
  *
- * Copyright (C) 2013-2016, PostgreSQL Global Development Group
+ * Copyright (c) 2013-2016, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *		src/test/modules/worker_spi/worker_spi.c