Update to 7.6.22

Changes: https://typo3.org/download/release-notes/whats-new/

		https://typo3.org/news/article/typo3-cms-7622-and-875-released/

PR: 222070
Submitted by: Helmut Ritter <freebsd-ports@charlieroot.de> (maintainer)
MFH: 2017Q3