lootabc and showrace options

Replace "feature_toggle" implementation with an easier-to-understand
boolean option called "lootabc".

Provide "showrace", an option to display the hero by race glyph rather
than by role glyph.

Document the above.

Remove some obsolete Mac options.

doc/Guidebook.tex

@@ -27,7 +27,7 @@
 \begin{document}
 %
 % input file: guidebook.mn
-% $Revision$ $Date$
+% $Revision: 1.37 $ $Date: 2002/03/23 20:03:20 $
 %
 %.ds h0 "
 %.ds h1 %.ds h2 \%
@@ -2235,6 +2235,10 @@ Display an introductory message when starting the game (default on).
 Show corridor squares seen by night vision or a light source held by your
 character as lit (default off).
 %.lp
+\item[\ib{lootabc}]
+Use the old `{\tt a}', `{\tt b}', and `{\tt c}' keyboard shortcuts when
+looting, rather than the mnemonics `{\tt o}', `{\tt i}', and `{\tt b}' (default off).
+%.lp
 \item[\ib{mail}]
 Enable mail delivery during the game (default on).
 %.lp
@@ -2431,6 +2435,11 @@ letter of each category (`{\tt t}', `{\tt a}' or `{\tt o}') is necessary.
 \item[\ib{showexp}]
 Show your accumulated experience points on bottom line (default off).
 %.lp
+\item[\ib{showrace}]
+Display yourself as the glyph for your race, rather than the glyph
+for your role (default off).  Note that this setting affects only
+the appearance of the display, not the way the game treats you.
+%.lp
 \item[\ib{showscore}]
 Show your approximate accumulated score on bottom line (default off).
 %.lp