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

@@ -59,7 +59,7 @@ cpu_jids=""
 for exe in ${cuda_exes} ${cpu_exes};
 do
   variant=`basename ${exe}`
-  variant=`echo ${variante | sed 's/eddy_//'`
+  variant=`echo ${variant} | sed 's/eddy_//'`
   
   if [[ "${exe}" == *"cuda"* ]]; then
     fsl_sub="fsl_sub -l ${outdir} -q cuda.q"