Change ("a" . "b") . "c" into "a" . "b" . "c" using the lex-pass tool.

Change-Id: I8a30e8689c1c567770d0c03beaa12a0bf29e9b09
Resolves: #40878
Related: #40095
Releases: 6.0
Reviewed-on: http://review.typo3.org/14563
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel