Bug#41893: main.variables mysql-test fails in new variable like '%alloc%' is added.

Added ORDER BY clause to I_S query to ensure consistent order.
There were differences between 5.1 and 6.0 output.  Correcting it 5.1.

mysql-test/r/variables.result

@@ -318,13 +318,13 @@ transaction_prealloc_size	4096
 SELECT * FROM information_schema.session_variables 
 WHERE variable_name IN ('range_alloc_block_size',
 'query_alloc_block_size', 'query_prealloc_size',
-'transaction_alloc_block_size', 'transaction_prealloc_size');
+'transaction_alloc_block_size', 'transaction_prealloc_size') ORDER BY 1;
 VARIABLE_NAME	VARIABLE_VALUE
+QUERY_ALLOC_BLOCK_SIZE	8192
+QUERY_PREALLOC_SIZE	8192
 RANGE_ALLOC_BLOCK_SIZE	4096
 TRANSACTION_ALLOC_BLOCK_SIZE	8192
 TRANSACTION_PREALLOC_SIZE	4096
-QUERY_PREALLOC_SIZE	8192
-QUERY_ALLOC_BLOCK_SIZE	8192
 Testing values that are multiples of 1024
 set @@range_alloc_block_size=1024*15+1024;
 set @@query_alloc_block_size=1024*15+1024*2;

mysql-test/t/variables.test

@@ -188,7 +188,7 @@ SHOW VARIABLES WHERE variable_name IN ('range_alloc_block_size',
 SELECT * FROM information_schema.session_variables 
 WHERE variable_name IN ('range_alloc_block_size',
 'query_alloc_block_size', 'query_prealloc_size',
-'transaction_alloc_block_size', 'transaction_prealloc_size');
+'transaction_alloc_block_size', 'transaction_prealloc_size') ORDER BY 1;
 --echo Testing values that are multiples of 1024
 set @@range_alloc_block_size=1024*15+1024;
 set @@query_alloc_block_size=1024*15+1024*2;