Move ntp.drift file out of /etc and into /var/lib/ntp.

ntp tries to create a temporary file in the same dir when updating,
and that doesn't work with /etc.

clientside/tmcc/linux-ms/mfs/slicefix

@@ -233,6 +233,23 @@ dolinux() {
 	}
     fi
 
+    #
+    # XXX Ugh...need to fix up our ntp.conf.
+    # It wants to create a temp file for ntp.drift in the same directory
+    # and ntp cannot write /etc, so move the drift file to /var/lib/ntp.
+    #
+    if [ -e "/mnt/etc/ntp.conf" -a -d "/mnt/var/lib/ntp" ]; then
+	echo "  moving ntp.drift to /var/lib/ntp..."
+	if [ -e "/mnt/etc/ntp.drift" ]; then
+	    mv /mnt/etc/ntp.drift /mnt/var/lib/ntp/
+	fi
+	sed -i -e "s;/etc/ntp.drift;/var/lib/ntp/ntp.drift;" /mnt/etc/ntp.conf || {
+	    echo "Failed to update /etc/ntp.conf"
+	    umount $rootdev
+	    return 1
+	}
+    fi
+
     #
     # See if we need to trim the FS
     #