Debraining humans visually change their appearance.

https://dl.dropboxusercontent.com/u/831776/debrain1.png
https://dl.dropboxusercontent.com/u/831776/debrain2.png
Placing a brain back into a human calls update_hair(). They will look bald.
A fix for a runtime that would occur if you tried to re-brain a monkey.
Fix for runtime when debraining a mutantrace human.
Moved the getbrain(src) to be used with the h_style code.
Changed stand_icon to face_standing so update_body won't have to be used to clear it.

Used update_hair(0) instead of update_hair()
Merge pull request #392 from Ikarrus/debrain

Debraining humans visually change their appearance.