[BUGFIX] Respect tablenames, fieldname when updating mm record

The Typo3DbBackend doesn't respect the columns tablenames
and fieldname when updating mm releations. As result wrong
relations are adjusted.

Resolves: #61268
Releases: 6.2, 6.3
Change-Id: Ica1c04fb54b2f152ccf0f9bd766091854f01721a
Reviewed-on: http://review.typo3.org/32673
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>