Fixed warnings

storage/oqgraph/ha_oqgraph.cc:
  Fixed compiler warning
storage/xtradb/handler/ha_innodb.cc:
  Ifdef:ed note used function

sql/sql_yacc.yy

@@ -33,6 +33,7 @@
 #define Lex (thd->lex)
 
 #define Select Lex->current_select
+#include <my_global.h>
 #include "sql_priv.h"
 #include "unireg.h"                    // REQUIRED: for other includes
 #include "sql_parse.h"                        /* comp_*_creator */
@@ -1834,7 +1835,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
         opt_column_list grant_privileges grant_ident grant_list grant_option
         object_privilege object_privilege_list user_list user_and_role_list
         rename_list
-        clear_privileges flush_options flush_option
+        clear_privileges flush_options flush_option table_or_tables
         opt_flush_lock flush_lock flush_options_list
         equal optional_braces
         opt_mi_check_type opt_to mi_check_types 
@@ -12816,7 +12817,7 @@ flush_lock:
               MYSQL_YYABORT;
             } 
             Lex->type|= REFRESH_FOR_EXPORT;
-          } EXPORT_SYM
+          } EXPORT_SYM {}
         ;
 
 flush_options_list:
@@ -14829,8 +14830,8 @@ lock:
         ;
 
 table_or_tables:
-          TABLE_SYM
-        | TABLES
+          TABLE_SYM {}
+        | TABLES {}
         ;
 
 table_lock_list:

storage/oqgraph/ha_oqgraph.cc

@@ -859,7 +859,7 @@ static int parse_latch_string_to_legacy_int(const String& value, int &latch)
   unsigned long int v = strtoul( latchValue.c_ptr_safe(), &eptr, 10);
   if (!*eptr) {
     // we had an unsigned number; remember 0 is valid too ('vertices' aka 'no_search'))
-    if (v >= 0 && v < oqgraph::NUM_SEARCH_OP) {
+    if (v < oqgraph::NUM_SEARCH_OP) {
       latch = v;
       return true;
     }

storage/xtradb/handler/ha_innodb.cc

@@ -1179,6 +1179,7 @@ innobase_start_trx_and_assign_read_view(
 	THD*		thd);		/* in: MySQL thread handle of the
 					user for whom the transaction should
 					be committed */
+#ifdef NOT_USED
 /*****************************************************************//**
 Creates an InnoDB transaction struct for the thd if it does not yet have one.
 Starts a new InnoDB transaction if a transaction is not yet started. And
@@ -1195,6 +1196,7 @@ innobase_start_trx_and_clone_read_view(
 	THD*		from_thd);	/* in: MySQL thread handle of the
 					user session from which the consistent
 					read should be cloned */
+#endif
 /****************************************************************//**
 Flushes InnoDB logs to disk and makes a checkpoint. Really, a commit flushes
 the logs, and the name of this function should be innobase_checkpoint.
@@ -4127,6 +4129,7 @@ innobase_commit_ordered(
 	DBUG_VOID_RETURN;
 }
 
+#ifdef NOT_USED
 /*****************************************************************//**
 Creates an InnoDB transaction struct for the thd if it does not yet have one.
 Starts a new InnoDB transaction if a transaction is not yet started. And
@@ -4222,6 +4225,7 @@ innobase_start_trx_and_clone_read_view(
 
 	DBUG_RETURN(0);
 }
+#endif
 
 /*****************************************************************//**
 Commits a transaction in an InnoDB database or marks an SQL statement