MXS-1395 Allow NAMES to be used as keyword/id

NAMES is a keyword but not a reserved one. So it must be possible
to use it as an identifier as well.

query_classifier/qc_sqlite/sqlite-src-3110100/src/parse.y

@@ -604,6 +604,7 @@ columnid(A) ::= nm(X). {
   /*KEY*/
   /*LIKE_KW*/
   MASTER /*MATCH*/ MERGE
+  NAMES
   NO
   OF OFFSET OPEN
   QUICK