CM:
-TEST: Changes transformix test to use smaller image. Test possibly failed last night due to time out.

git-svn-id: https://svn.bigr.nl/elastix/trunkpublic@4360 4d348492-3962-11de-aa85-65a2020054a3
CM:
-ENH: Added an initialization method to the affine transform that finds the initial translation vector by trying to align the centers (if axis aligned) of the top planes of the volume. Center of rotation points is the center of the fixed image.

git-svn-id: https://svn.bigr.nl/elastix/trunkpublic@4364 4d348492-3962-11de-aa85-65a2020054a3