Two unit tests, which test the EMF+ records DrawString and DrawLine
independently.
To this end, a fixed view decomposition of metafiles is implemented.

The chosen primitives should be optimal, even for future extensions
of the EMF+ parser.

Change-Id: I12672d3b294ff0fdae63c7a5ce211517ef8f763c
Reviewed-on: https://gerrit.libreoffice.org/41425Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>