wolf3d: write configs to /.rockbox/wolf3d instead of /.wolf4sdl

Let's keep things neat.

Change-Id: I995b2c4949d3adbbd7ea4ef361f0712aa222612e

apps/plugins/sdl/progs/wolf3d/version.h

@@ -4,7 +4,7 @@
 #ifndef VERSIONALREADYCHOSEN              // used for batch compiling
 
 #ifndef DATADIR
-#define DATADIR "/.rockbox/wolf3d/"
+#define DATADIR ROCKBOX_DIR "/wolf3d/"
 #endif
 
 /* Defines used for different versions */

apps/plugins/sdl/progs/wolf3d/wl_menu.c

@@ -4001,7 +4001,7 @@ CheckForEpisodes (void)
         {
             Quit("Your $HOME directory is not defined. You must set this before playing.");
         }
-        #define WOLFDIR "/.wolf4sdl"
+#define WOLFDIR ROCKBOX_DIR "/wolf3d"
         if(strlen(homedir) + sizeof(WOLFDIR) > sizeof(configdir))
         {
             Quit("Your $HOME directory path is too long. It cannot be used for saving games.");