Remove experimental Unicode support.

This reverts commit 7f0f43e6f9 and some related
subsequent commits.

This compiles, but I have not done extensive testing.

Conflicts:
	include/config.h
	include/decl.h
	include/extern.h
	include/global.h
	include/tradstdc.h
	include/wintty.h
	src/drawing.c
	src/files.c
	src/hacklib.c
	src/mapglyph.c
	src/options.c
	sys/winnt/nttty.c
	win/tty/getline.c
	win/tty/topl.c
	win/tty/wintty.c

src/pager.c

@@ -571,7 +571,7 @@ do_look(mode, click_cc)
 	for (i = 0; i < MAXMCLASSES; i++) {
 	    if (sym == ((from_screen || clicklook) ?
 			showsyms[i + SYM_OFF_M] : def_monsyms[i].sym) &&
-			def_monsyms[i].explain) {
+		def_monsyms[i].explain) {
 		need_to_look = TRUE;
 		if (!found) {
 		    Sprintf(out_str, "%s        %s",