Fixes from test on EL5.

start.sh

@@ -2,14 +2,15 @@
 appname="$1"
 script="${2:-${appname}}"
 datadir=/var/log/milter
+python="python2.4"
 exec >>${datadir}/${appname}.log 2>&1
 if test -s ${datadir}/${script}.py; then
-  cd %{datadir} # use version in log dir if it exists for debugging
+  cd ${datadir} # use version in log dir if it exists for debugging
 else
   cd /usr/lib/pymilter
 fi
 
 cd /var/log/milter
 exec >>${appname}.log 2>&1
-python2.4 ${appname}.py &
+${python} ${appname}.py &
 echo $! >/var/run/milter/${appname}.pid