Update copyright information in alloc.c and other modified files (2020)

* README.QUICK (Copyright): Update year (2019 to 2020).
* README.md (Copyright): Likewise.
* alloc.c (Copyright, GC_copyright): Likewise.
* gc_badalc.cc (Copyright): Likewise.
* include/gc.h (Copyright): Likewise.
* finalize.c (Copyright): Update (add Ivan Maidanski).
* include/gc_config_macros.h (Copyright): Likewise.
* include/private/gc_priv.h (Copyright): Likewise.
* mark.c (Copyright): Likewise.
* misc.c (Copyright): Likewise.
* os_dep.c (Copyright): Likewise.
* pthread_stop_world.c (Copyright): Likewise.
* pthread_support.c (Copyright): Likewise.
* win32_threads.c (Copyright): Likewise.

1 files changed, 2 insertions, 2 deletions

diff --git a/alloc.c b/alloc.c
index 29685eae..0e2ec159 100644
--- a/alloc.c
+++ b/alloc.c
@@ -3,7 +3,7 @@
  * Copyright (c) 1991-1996 by Xerox Corporation.  All rights reserved.
  * Copyright (c) 1998 by Silicon Graphics.  All rights reserved.
  * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P.
- * Copyright (c) 2008-2019 Ivan Maidanski
+ * Copyright (c) 2008-2020 Ivan Maidanski
  *
  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
@@ -125,7 +125,7 @@ const char * const GC_copyright[] =
 "Copyright (c) 1991-1995 by Xerox Corporation.  All rights reserved. ",
 "Copyright (c) 1996-1998 by Silicon Graphics.  All rights reserved. ",
 "Copyright (c) 1999-2009 by Hewlett-Packard Company.  All rights reserved. ",
-"Copyright (c) 2008-2019 Ivan Maidanski ",
+"Copyright (c) 2008-2020 Ivan Maidanski ",
 "THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY",
 " EXPRESSED OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.",
 "See source code for details." };