Unix CLI option to set windowtype

Add the ability to select the windowtype on the command line on Unix using
a new -wwindowtype option.  I had thought the proposed patch could core
dump, but the default windowtype selection occurs earlier and ensures
that raw_print will always work.  So, the only problem with the proposed
patch was it didn't move the linux and sco special-case code until after
the selection was made.  That special-case code really should be moved to
to wintty.c, IMO since it doesn't affect other windowtypes.

sys/unix/unixmain.c

@@ -150,14 +150,7 @@ char *argv[];
 	check_linux_console();
 #endif
 	initoptions();
-	init_nhwindows(&argc,argv);
 	exact_username = whoami();
-#ifdef _M_UNIX
-	init_sco_cons();
-#endif
-#ifdef __linux__
-	init_linux_cons();
-#endif
 
 	/*
 	 * It seems you really want to play.
@@ -188,6 +181,13 @@ char *argv[];
 #endif
 
 	process_options(argc, argv);	/* command line options */
+	init_nhwindows(&argc, argv);	/* now we can set up window system */
+#ifdef _M_UNIX
+	init_sco_cons();
+#endif
+#ifdef __linux__
+	init_linux_cons();
+#endif
 
 #ifdef DEF_PAGER
 	if(!(catmore = nh_getenv("HACKPAGER")) && !(catmore = nh_getenv("PAGER")))
@@ -315,7 +315,6 @@ char *argv[];
 {
 	int i;
 
-
 	/*
 	 * Process options.
 	 */
@@ -404,6 +403,9 @@ char *argv[];
 			    	flags.initrace = i;
 			}
 			break;
+		case 'w': /* windowtype */
+			choose_windows(&argv[0][2]);
+			break;
 		case '@':
 			flags.randomall = 1;
 			break;