WL#797: Option to really Wipe data on delete/drop
Some security conserned applications (Goverment etc) require to really ensure data is really gone as soon as it is deleted, or at least this possibility can be reached. There are several possible ways to implement it 1) option --wipe-data which will force MySQL to wipe deleted rows data as well as Tables on deletion. 2) We can add option to the table, something like AUTO_WIPE=1 to enable wiping data on delete/drop 3) (easier way) we can just offer commands to completely wipe table instead of simply dropping it as well as similar command to wipe deleted rows from the table. If we really go for security we also would make sure no extra copies of secure data is left due to ALTER/OPTIMIZE table, temporary tables or sort files.
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