make configure handle service pack version strings

configure.in

@@ -30,7 +30,7 @@ NDB_VERSION_STATUS=""
 # Remember that regexps needs to quote [ and ] since this is run through m4
 MYSQL_NO_DASH_VERSION=`echo $VERSION | sed -e "s|[[a-z]]*-.*$||"`
 MYSQL_BASE_VERSION=`echo $MYSQL_NO_DASH_VERSION | sed -e "s|\.[[^.]]*$||"`
-MYSQL_VERSION_ID=`echo $MYSQL_NO_DASH_VERSION. | sed -e 's/[[^0-9.]]//g; s/\./  /g; s/ \([[0-9]]\) / 0\\1 /g; s/ //g'`
+MYSQL_VERSION_ID=`echo $MYSQL_NO_DASH_VERSION | sed -e 's|[[^0-9.]].*$||;s|$|.|' | sed -e 's/[[^0-9.]]//g; s/\./  /g; s/ \([[0-9]]\) / 0\\1 /g; s/ //g'`
 
 # The port should be constant for a LONG time
 MYSQL_TCP_PORT_DEFAULT=3306