Add Mac baseline after r146510.

* platform/mac/svg/custom/marker-orient-auto-expected.png: Added.
* platform/mac/svg/custom/marker-orient-auto-expected.txt: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146545 268f45cc-cd09-0410-ab3c-d52691b4dbfc