Post-merge fixes.

mysql-test/r/ps.result

@@ -778,3 +778,19 @@ lily
 river
 drop table t1;
 deallocate prepare stmt;
+create table t1 (a int);
+prepare stmt from "select ??";
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?' at line 1
+prepare stmt from "select ?FROM t1";
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?FROM t1' at line 1
+prepare stmt from "select FROM t1 WHERE?=1";
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM t1 WHERE?=1' at line 1
+prepare stmt from "update t1 set a=a+?WHERE 1";
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?WHERE 1' at line 1
+select ?;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?' at line 1
+select ??;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '??' at line 1
+select ? from t1;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? from t1' at line 1
+drop table t1;

mysql-test/t/ps.test

@@ -822,4 +822,3 @@ select ??;
 --error 1064
 select ? from t1;
 drop table t1;
-deallocate prepare stmt;

sql/sql_lex.cc

@@ -562,7 +562,7 @@ int yylex(void *arg, void *yythd)
         its value in a query for the binlog, the query must stay
         grammatically correct.
       */
-      else if (c == '?' && ((THD*) yythd)->command == COM_PREPARE &&
+      else if (c == '?' && ((THD*) yythd)->command == COM_STMT_PREPARE &&
                !ident_map[cs, yyPeek()])
         return(PARAM_MARKER);
       return((int) c);