Apply InnoDB snapshot innodb-5.1-ss2858, part 9.  Improve a comment.
Apply InnoDB snapshot innodb-5.1-ss2858, part 9.  Improve a comment.

Detailed revision comments:

r2744 | marko | 2008-10-09 10:53:09 +0300 (Thu, 09 Oct 2008) | 5 lines
branches/5.1: ha_innobase::delete_all_rows(): In response to a user asking
<http://forums.innodb.com/read.php?4,215,215> why DELETE FROM t is not
mapped to TRUNCATE TABLE t as it is in MyISAM, note in a comment that
DELETE is transactional while TRUNCATE is not.

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