Aaron D. Campbell 0f83d87e7f Database: Hardening to bring wpdb::prepare() inline with documentation.
`wpdb::prepare()` supports %s, %d, and %F as placeholders in the query string. Any other non-escaped % will be escaped.

Merges [41496] to 4.5 branch.



git-svn-id: https://develop.svn.wordpress.org/branches/4.5@41500 602fd350-edb4-49c9-b593-d223f7449a82
2017-09-19 18:13:37 +00:00
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