Mail: Upgrade PHPMailer to 5.2.21.

Merges [39645], [36083], [33142], [33124], [29783] to the 4.0 branch.
See #37210.

Built from https://develop.svn.wordpress.org/branches/4.0@39728


git-svn-id: http://core.svn.wordpress.org/branches/4.0@39668 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Dion Hulse 2017-01-06 22:06:41 +00:00
parent e21c149861
commit 918f720050
2 changed files with 2078 additions and 1074 deletions

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