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

release/makecygwinpkg.in

+#!/bin/sh
+
+set -u
+set -e
+trap onexit INT
+trap onexit TERM
+trap onexit EXIT
+
+TMPDIR=
+
+onexit()
+{
+        if [ ! "$TMPDIR" = "" ]; then
+                rm -rf $TMPDIR
+        fi
+}
+
+PACKAGE_NAME=@PKGNAME@
+VERSION=@VERSION@
+BUILD=@BUILD@
+SRCDIR=@abs_top_srcdir@
+
+PREFIX=%{__prefix}
+DOCDIR=%{__docdir}
+LIBDIR=%{__libdir}
+
+umask 022
+rm -f $PACKAGE_NAME-$VERSION-$BUILD.tar.bz2
+TMPDIR=`mktemp -d /tmp/ljtbuild.XXXXXX`
+__PWD=`pwd`
+make install DESTDIR=$TMPDIR/pkg docdir=/usr/share/doc/$PACKAGE_NAME-$VERSION \
+        exampledir=/usr/share/doc/$PACKAGE_NAME-$VERSION
+rm $TMPDIR/pkg$LIBDIR/*.la
+if [ "$PREFIX" = "/opt/libjpeg-turbo" -a "$DOCDIR" = "/opt/libjpeg-turbo/doc" ]; then
+        ln -fs /usr/share/doc/$PACKAGE_NAME-$VERSION $TMPDIR/pkg$DOCDIR
+fi
+cd $TMPDIR/pkg
+tar cfj ../$PACKAGE_NAME-$VERSION-$BUILD.tar.bz2 *
+cd $__PWD
+mv $TMPDIR/*.tar.bz2 .
+
+exit 0