shorten options.c a little by moving some color stuff out of it

creates new coloratt.c file

Also, this attempts to fulfill a wish-list item by paxed, to
allow naming colors in symbols file by name as an alternative
to using r-g-b values.  The basic color names as well as html
color names are supported.

include/hack.h

@@ -11,7 +11,6 @@
 #endif
 #include "lint.h"
 
-#include "color.h"
 #include "align.h"
 #include "dungeon.h"
 #include "objclass.h"