New middleware version discovery

SiteTests/testjob/tests/CE-cms-env

@@ -102,19 +102,25 @@ fi
 echo
 echo "Checking middleware installation..."
 echo
-type="unknown"
-mwver='unknown'
-if type -f glite-version > /dev/null; then
+mw=0
+if type -f glite-version > /dev/null 2>&1; then
     type="gLite"
     mwver=`glite-version`
+    mw=1
 elif [ -f /etc/emi-version ] ; then
     type="EMI"
     mwver=`cat /etc/emi-version`
-elif type -f lcg-version > /dev/null; then
+    mw=1
+elif type -f lcg-version > /dev/null 2>&1; then
     type="LCG"
     mwver=`lcg-version`
+    mw=1
+fi
+if [ $mw == 1 ] ; then
+    echo "Middleware: $type $mwver"
+else
+    echo "WARNING: Cannot find middleware type and version"
 fi
-echo "Middleware: $type $mwver"
 
 type -t lcg-cp > /dev/null
 result=$?