Mail: Upgrade PHPMailer to 5.2.21.

Merges [39645], [36083], [33142], [33124] to the 4.2 branch.
See #37210.

Built from https://develop.svn.wordpress.org/branches/4.2@39726


git-svn-id: http://core.svn.wordpress.org/branches/4.2@39666 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Dion Hulse 2017-01-06 22:06:00 +00:00
parent 8afdd2be32
commit 755a765d49
2 changed files with 2077 additions and 1073 deletions

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