make cythonize detection compatible with /bin/dash on ubunutu

src/ML-IAP/Install.sh

@@ -69,7 +69,7 @@ elif (test $1 = 0) then
   sed -i -e '/^include.*python.*mliap_python.*$/d' ../Makefile.package.settings
 
 elif (test $1 = 2) then
-  if (test "$(type cythonize 2> /dev/null)" != "" && test -e ../python_impl.cpp) then
+  if (type cythonize 2>&1 > /dev/null && test -e ../python_impl.cpp) then
     if (test -e ../Makefile.package) then
       sed -i -e 's/[^ \t]*-DMLIAP_PYTHON[^ \t]* //g' ../Makefile.package
     fi