Made IPCs be able to swap out limbs.

Features:
IPCs can detach their arms and legs, and potentially swap them out with someone else's or new ones.
Moderators and Admins can Rip their heads off, but it tells others that if they want to suicide, they should ask an Admin.
IPCs can repair themselves with welders and cable coils.
IPCs can quickly and easily re-attach limbs, including the head.