First cut at sil shading of neutrals - not working yet
Shading mostly done, including wall options and trap detect

Conflicts:
	src/option.h
Attempt at cocoa
Cocoa good now
Carbon attempt
Tidy data types
Fix COLOR_BLACK
Better trap detect colour
Carbon colour fix
Fix windows backgrounds
Some pref file tidying
Remove vestigial GRAPHICS_ modes
Fix html dumps
Fix some shading details
Steal elly's new view code, fixing lighting
Prevent view crashes