rigidbody: Make rigid bodies kinematic during transformation

This allows moving rigid bodies on frame > startframe.
Also rigid bodies can now be picked up and trown around while the
simulation is running.

Note: There is a small glitch with cancelling tansform during simulation
but it's tricky to get rid of.

TODO: Avoid static-static collision warnings

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54038 954f8c5b-7b00-dc11-b283-0030488c597c
File Menu, "Save startup file" no asks for save-over confirm.
Being a destructive action (and there are no versions saved as backup) it's an
OK convention to prevent accidents.



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54039 954f8c5b-7b00-dc11-b283-0030488c597c