mesh-cache deform modifier,
supports MDD and PC2 formats.

see wiki docs:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Modifiers/Deform/Mesh_Cache


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53963 954f8c5b-7b00-dc11-b283-0030488c597c