Since the touchstone uses objclass oc_color we need

to make that field unconditional, otherwise
NetHack won't compile without TEXTCOLOR defined.

Also provides at least an interim solution for the has_color()
problem that Warwick pointed out.

Lastly, Archeologists know touchstones.

src/mapglyph.c

@@ -6,6 +6,7 @@
 #if defined(TTY_GRAPHICS)
 #include "wintty.h"	/* for prototype of has_color() only */
 #endif
+#include "color.h"
 
 int explcolors[] = {
 	CLR_BLACK,	/* dark    */
@@ -17,6 +18,10 @@ int explcolors[] = {
 	CLR_WHITE,	/* frosty  */
 };
 
+#if !defined(TTY_GRAPHICS)
+#define has_color(n)  TRUE
+#endif
+
 #ifdef TEXTCOLOR
 #define zap_color(n)  color = iflags.use_color ? zapcolors[n] : NO_COLOR
 #define cmap_color(n) color = iflags.use_color ? defsyms[n].color : NO_COLOR