[SECURITY] Fix RCE in swiftmailer

A remote code execution vulnerability was fixed upstream
which is now also fixed in the code we deliver with TYPO3.

This is not a full upgrade of the library but a backport
of the security fix.

Change-Id: I9bc6839c61724e9af43c9bfed68fb9d608646e30
Resolves: #59573
Releases: 4.5, 4.6, 4.7, 6.0, 6.1, 6.2
Security-Commit: d4119b872c8cd80782ef25a36fdd7a88b2bdac1c
Security-Bulletin: TYPO3-CORE-SA-2014-002
Reviewed-on: http://review.typo3.org/33452
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
[SECURITY] Fix DoS in openid

Upgrade openid to latest upstream version.
This includes the sec fix already.

Change-Id: I627b56683477651db7b3bc305f977b5c1d65230b
Resolves: #62357
Releases: master, 6.2, 6.1, 6.0, 4.7, 4.6, 4.5
Security-Commit: 1e69a6b7a661af4116b682dfa59b49d258ade72c
Security-Bulletin: TYPO3-CORE-SA-2014-002
Reviewed-on: http://review.typo3.org/33453
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
[RELEASE] Release of TYPO3 4.7.20

Change-Id: Ie1c239fcb723c4ecaa1743f6601a4f739f972bd8
Reviewed-on: http://review.typo3.org/33463
Reviewed-by: TYPO3 Release Team <typo3v4@typo3.org>
Tested-by: TYPO3 Release Team <typo3v4@typo3.org>
[TASK] Set TYPO3 version to 4.7.21-dev

Change-Id: I129536ec1c665f0446f5d910e00fe941d2d63236
Reviewed-on: http://review.typo3.org/33464
Reviewed-by: TYPO3 Release Team <typo3v4@typo3.org>
Tested-by: TYPO3 Release Team <typo3v4@typo3.org>