Blender Git Loki

Fix for [#27038] Bugs when linking particles/collision/softbody modifiers
* Collision modifiers are disabled here by intention, but particles and softbody were copied the wrong way over :)
* On a further note I don't really get this whole "link modifiers" thing as it just copies the modifiers. As modifiers aren't ID blocks there's no sense in calling this linking!
* Secondly I don't think particles, smoke etc should be considered as modifiers here at all, meaning they shouldn't be linked/copied. These "modifiers" only read the mesh data at a certain location of the stack, but don't actually modify the mesh in any way (more info here http://wiki.blender.org/index.php/User:Jhk#Modifier_Stack_proposal).