Hair dynamics

Hair particle dynamics are now done with the cloth simulation!

• An added hair specific feature of internal friction makes hair act much more realistically.
• As a result of the earlier point cache update the hair dynamics can now be edited in particle mode after baking just like particle, cloth and soft body bakes.

All this is still very early code and for example collisions with other objects are not implemented yet, but all in all it's light years more stable and better than the old soft body based dynamics!

Some more details in the commit message.

When everything falls into place

Yes it's teaser time again! No sound, just particles & cloth simulation :)

Disconnect & connect

Some more details at the commit message.