test: use check_version.inc

test/sql/include/have_fulltext_index_comment.inc

@@ -1,7 +1,25 @@
---disable_query_log
-let $fulltext_index_comment = `SELECT @@global.version >= '5.5'`;
---enable_query_log
-if (!$fulltext_index_comment)
-{
+# Copyright(C) 2012 Kouhei Sutou <kou@clear-code.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+--source include/check_version.inc
+
+if ($version_55_or_later) {
+  let $fulltext_index_comment = `SELECT @@global.version >= '5.5'`;
+}
+
+if (!$fulltext_index_comment) {
   skip Fulltext index comment is available in version 5.5 or later;
 }