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

release/Welcome.rtf

Index: release/Welcome.rtf
diff --git a/release/Welcome.rtf b/release/Welcome.rtf
new file mode 100755
index 0000000000000000000000000000000000000000..a570c5bafa9db8d51c9ef07279775df22f0acdea
--- /dev/null
+++ b/release/Welcome.rtf
@@ -0,0 +1,17 @@
+{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf360
+{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fmodern\fcharset0 CourierNewPSMT;}
+{\colortbl;\red255\green255\blue255;}
+\margl1440\margr1440\vieww9000\viewh8400\viewkind0
+\deftab720
+\pard\pardeftab720\ql\qnatural
+
+\f0\fs24 \cf0 This installer will install the libjpeg-turbo SDK and run-time libraries onto your computer so that you can use libjpeg-turbo to build new applications or accelerate existing ones.  To remove the libjpeg-turbo package, run\
+\
+\pard\pardeftab720\ql\qnatural
+
+\f1 \cf0   /opt/libjpeg-turbo/bin/uninstall\
+\pard\pardeftab720\ql\qnatural
+
+\f0 \cf0 \
+from the command line.\
+}