Major re-arrangement of eddy tests

so that job submission / monitoring code is shared across all tests in a common runEddy script. Also test both $FSLDIR/bin/eddy_openmp and $FSLDIR/bin/eddy_cpu if either exist. Tests can be executed either on a cluster submission node, or locally

eddy/runEddy

@@ -104,7 +104,7 @@ if [ ! -z "${SGE_ROOT}" ]; then
     if [ $tmp -eq 0 ]; then
       break
     fi
-    sleep 5m
+    sleep 1m
   done
 fi