Convert innobase_buffer_pool_size and innobase_log_file_size types from

longlong to long long because MYSQL_SYSVAR_LONGLONG marco expects long long
type.

Also change
((ulint)innobase_buffer_pool_size) / 1024
to
(ulint)(innobase_buffer_pool_size / 1024)
and remove comment which is no longer true.

Provided that innobase_buffer_pool_size is always 64bits these statements
are equivalent if ulint is 64 bit (well it will screw up if
innobase_buffer_pool_size is negative). And if ulint is 32 bit the later
variant gives a little more chance that the value will fit.

Approved by:	Heikki

handler/ha_innodb.cc

@@ -130,7 +130,7 @@ static long innobase_mirrored_log_groups, innobase_log_files_in_group,
 	innobase_lock_wait_timeout, innobase_force_recovery,
 	innobase_open_files;
 
-static longlong innobase_buffer_pool_size, innobase_log_file_size;
+static long long innobase_buffer_pool_size, innobase_log_file_size;
 
 /* The default values for the following char* start-up parameters
 are determined in innobase_init below: */
@@ -1584,10 +1584,7 @@ innobase_init(
 	changes the value so that it becomes the number of database pages. */
 
 	if (innobase_buffer_pool_awe_mem_mb == 0) {
-		/* Careful here: we first convert the signed long int to ulint
-		and only after that divide */
-
-		srv_pool_size = ((ulint) innobase_buffer_pool_size) / 1024;
+		srv_pool_size = (ulint)(innobase_buffer_pool_size / 1024);
 	} else {
 		srv_use_awe = TRUE;
 		srv_pool_size = (ulint)