Add RedHat install scripts

RedHat/opencv_latest.sh

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+sudo yum -y install wget
+. `dirname $0`/../get_latest_version_download_file.sh
+if [ $? -ne 0 ]; then
+	exit $?;
+fi
+echo "Installing OpenCV" $version
+mkdir -p OpenCV
+cd OpenCV
+echo "Installing Dependencies"
+sudo yum -y install http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
+set -e
+sudo yum -y groupinstall "Development Tools"
+sudo yum -y install unzip opencv opencv-devel gtk2-devel
+if [ ! -f $downloadfile ]; then
+	echo "Downloading OpenCV" $version
+	wget -O $downloadfile http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/$version/$downloadfile/download
+fi
+if [ ! -d opencv-$version ]; then
+	echo "Installing OpenCV" $version
+	echo $downloadfile | grep ".zip"
+	if [ $? -eq 0 ]; then
+		unzip $downloadfile
+	else
+		tar -xvf $downloadfile
+	fi
+fi
+cd opencv-$version
+cmake --version | grep " 2.6"
+if [ $? -eq 0 ]; then
+	# Delete lines beginning with string(MD5 based on incompatibility with cmake 2.6.  See 
+	# http://answers.opencv.org/question/24095/building-opencv-247-on-centos-6/
+	sed  -i '/string(MD5/d' cmake/cl2cpp.cmake
+fi
+mkdir -p build
+cd build
+cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
+make -j 4
+sudo make install
+sudo sh -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
+sudo ldconfig
+echo "OpenCV" $version "ready to be used"

get_latest_version_download_file.sh

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+# Dan Walkes
+# 2014-01-29
+# Find the latest version and download file link from the OpenCV sourceforge page
+
+version="$(wget -q -O - http://sourceforge.net/projects/opencvlibrary/files/opencv-unix | egrep -m1 -o '\"[0-9](\.[0-9])+' | cut -c2-)"
+downloadfilelist="opencv-$version.tar.gz opencv-$version.zip"
+downloadfile=
+for file in $downloadfilelist;
+do
+        wget --spider http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/$version/$file/download
+        if [ $? -eq 0 ]; then
+                downloadfile=$file
+        fi
+done
+if [ -z "$downloadfile" ]; then
+        echo "Could not find download file on sourceforge page.  Please find the download file for version $version at"
+        echo "http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/$version/ and update this script"
+        exit  1
+fi