[TASK] Improve variable access in compiled templates

This is a slight improvement for variable access in Fluid
that reduces recursions of ``getPropertyPath`` by one level
by pre evaluating the property path and fetching the first level
directly from the variable container in compiled templates.

Releases: master
Resolves: #66745
Change-Id: I7e9abe9e8c24af7b3bf11779ad1c4257bbb531c0
Reviewed-on: http://review.typo3.org/39195


Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>