Update copyright for 2019

Backpatch-through: certain files through 9.4

src/backend/port/atomics.c

@@ -3,7 +3,7 @@
  * atomics.c
  *	   Non-Inline parts of the atomics implementation
  *
- * Portions Copyright (c) 2013-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 2013-2019, PostgreSQL Global Development Group
  *
  *
  * IDENTIFICATION

src/backend/port/posix_sema.c

@@ -15,7 +15,7 @@
  * forked backends, but they could not be accessed by exec'd backends.
  *
  *
- * 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/port/sysv_sema.c

@@ -4,7 +4,7 @@
  *	  Implement PGSemaphores using SysV semaphore facilities
  *
  *
- * 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/port/sysv_shmem.c

@@ -9,7 +9,7 @@
  * exist, though, because mmap'd shmem provides no way to find out how
  * many processes are attached, which we need for interlocking purposes.
  *
- * 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/port/tas/sunstudio_sparc.s

@@ -3,7 +3,7 @@
 ! sunstudio_sparc.s
 !	  compare and swap for Sun Studio on Sparc
 !
-! 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/port/tas/sunstudio_x86.s

@@ -3,7 +3,7 @@
 / sunstudio_x86.s
 /	  compare and swap for Sun Studio on x86
 /
-/ 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/port/win32/crashdump.c

@@ -28,7 +28,7 @@
  * be added, though at the cost of a greater chance of the crash dump failing.
  *
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32/crashdump.c

src/backend/port/win32/mingwcompat.c

@@ -3,7 +3,7 @@
  * mingwcompat.c
  *	  MinGW compatibility functions
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32/mingwcompat.c

src/backend/port/win32/signal.c

@@ -3,7 +3,7 @@
  * signal.c
  *	  Microsoft Windows Win32 Signal Emulation Functions
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32/signal.c

src/backend/port/win32/socket.c

@@ -3,7 +3,7 @@
  * socket.c
  *	  Microsoft Windows Win32 Socket Functions
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32/socket.c

src/backend/port/win32/timer.c

@@ -8,7 +8,7 @@
  *	  - Does not support interval timer (value->it_interval)
  *	  - Only supports ITIMER_REAL
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32/timer.c

src/backend/port/win32_sema.c

@@ -3,7 +3,7 @@
  * win32_sema.c
  *	  Microsoft Windows Win32 Semaphores Emulation
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32_sema.c

src/backend/port/win32_shmem.c

@@ -3,7 +3,7 @@
  * win32_shmem.c
  *	  Implement shared memory using win32 facilities
  *
- * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
  *	  src/backend/port/win32_shmem.c