Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/

jversion.h

 /*
  * jversion.h
  *
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
- * Modifications:
- * Copyright (C) 2010, 2012-2014, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README file.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2010, 2012-2016, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains software version identification.
  */
 
 
 #if JPEG_LIB_VERSION >= 80
 
-#define JVERSION        "8d  15-Jan-2012"
+#define JVERSION        "8d  15-Jan-2012"
 
 #elif JPEG_LIB_VERSION >= 70
 
-#define JVERSION        "7  27-Jun-2009"
+#define JVERSION        "7  27-Jun-2009"
 
 #else
 
-#define JVERSION        "6b  27-Mar-1998"
+#define JVERSION        "6b  27-Mar-1998"
 
 #endif
 
-#define JCOPYRIGHT      "Copyright (C) 1991-2012 Thomas G. Lane, Guido Vollbeding\n" \
-                        "Copyright (C) 1999-2006 MIYASAKA Masaru\n" \
-                        "Copyright (C) 2009 Pierre Ossman for Cendio AB\n" \
-                        "Copyright (C) 2009-2014 D. R. Commander\n" \
-                        "Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)"
+/*
+ * NOTE: It is our convention to place the authors in the following order:
+ * - libjpeg-turbo authors (2009-) in descending order of the date of their
+ *   most recent contribution to the project, then in ascending order of the
+ *   date of their first contribution to the project
+ * - Upstream authors in descending order of the date of the first inclusion of
+ *   their code
+ */
+
+#define JCOPYRIGHT      "Copyright (C) 2009-2016 D. R. Commander\n" \
+                        "Copyright (C) 2011-2016 Siarhei Siamashka\n" \
+                        "Copyright (C) 2015-2016 Matthieu Darbois\n" \
+                        "Copyright (C) 2015 Google, Inc.\n" \
+                        "Copyright (C) 2013-2014 MIPS Technologies, Inc.\n" \
+                        "Copyright (C) 2013 Linaro Limited\n" \
+                        "Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)\n" \
+                        "Copyright (C) 2009 Pierre Ossman for Cendio AB\n" \
+                        "Copyright (C) 1999-2006 MIYASAKA Masaru\n" \
+                        "Copyright (C) 1991-2016 Thomas G. Lane, Guido Vollbeding" \
+
+#define JCOPYRIGHT_SHORT "Copyright (C) 1991-2016 The libjpeg-turbo Project and many others"