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

change.log

Index: change.log
diff --git a/change.log b/change.log
index b60ddd686c4a52868a50e70a7085c30ec8832d1d..563648a16056b4df74a09bb1a9bad5095e68f540 100644
--- a/change.log
+++ b/change.log
@@ -4,6 +4,23 @@ information relevant to libjpeg-turbo.
 CHANGE LOG for Independent JPEG Group's JPEG software
 
 
+Version 9b  17-Jan-2016
+-----------------------
+
+Document 'f' specifier for jpegtran -crop specification.
+Thank to Michele Martone for suggestion.
+
+
+Version 9  13-Jan-2013
+----------------------
+
+Add remark for jpeg_mem_dest() in jdatadst.c.
+Thank to Elie-Gregoire Khoury for the hint.
+
+Correct argument type in format string, avoid compiler warnings.
+Thank to Vincent Torri for hint.
+
+
 Version 8d  15-Jan-2012
 -----------------------