Fix the failing innodb.innodb test.

Support returning 512 and 511 pages for the buffer pool size, this
is undeterministic and probably depends on alignment issues.

The default buffer pool size is 8M (512) pages, which is set in
include/default_mysqld.cnf. So the previous "replace_result 8192 8191"
had no effect.

mysql-test/suite/innodb/r/innodb.result

@@ -1661,7 +1661,7 @@ count(*)
 drop table t1;
 SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_buffer_pool_pages_total';
 variable_value
-512
+511
 SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_page_size';
 variable_value
 16384

mysql-test/suite/innodb/t/innodb.test

@@ -1302,7 +1302,7 @@ drop table t1;
 
 # Test for testable InnoDB status variables. This test
 # uses previous ones(pages_created, rows_deleted, ...).
---replace_result 8192 8191
+--replace_result 512 511
 SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_buffer_pool_pages_total';
 SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_page_size';
 SELECT variable_value - @innodb_rows_deleted_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_deleted';