Fix "bashisms" in tanuki's script

installer/resources/i2prouter

@@ -321,7 +321,7 @@ if [ "$DIST_OS" = "macosx" ]
 then
     OS_VER=`sw_vers | grep 'ProductVersion:' | grep -o '[0-9]*\.[0-9]*\.[0-9]*'`
     DIST_ARCH="universal"
-    if [[ "$OS_VER" < "10.5.0" ]]
+    if [ "$OS_VER" -lt "10.5.0" ]
     then
         DIST_BITS="32"
     else
@@ -930,7 +930,7 @@ macosxstart() {
     fi
     # If launchd is set to run the daemon already at Load, we don't need to call start
     getpid
-    if [ "X$pid" == "X" ] ; then
+    if [ "X$pid" = "X" ] ; then
         launchctl start ${APP_PLIST_BASE}
     fi