store log file in ~/.config/eduke32/

Index: source/duke3d/src/game.cpp
--- source/duke3d/src/game.cpp.orig
+++ source/duke3d/src/game.cpp
@@ -6323,6 +6323,9 @@ void G_DrawFrame(void)
 
 int app_main(int argc, char const* const* argv)
 {
+    char logpath[BMAX_PATH];
+    char *homedir;
+    int r;
 #ifndef NETCODE_DISABLE
     if (enet_initialize() != 0)
         initprintf("An error occurred while initializing ENet.\n");
@@ -6349,21 +6352,22 @@ int app_main(int argc, char const* const* argv)
 
     G_ExtPreInit(argc, argv);
 
-#ifdef __APPLE__
-    if (!g_useCwd)
+    homedir = Bgethomedir();
+    if (!g_useCwd && homedir != NULL)
     {
-        char cwd[BMAX_PATH];
-        char *homedir = Bgethomedir();
-        if (homedir)
-            Bsnprintf(cwd, sizeof(cwd), "%s/Library/Logs/" APPBASENAME ".log", homedir);
+        Bsnprintf(logpath, sizeof(logpath), "%s/.config/%s", homedir, APPBASENAME);
+        r = Bmkdir(logpath, S_IRWXU);
+        if (r == 0 || (r == -1 && errno == EEXIST))
+        {
+            Bsnprintf(logpath, sizeof(logpath), "%s/.config/%s/%s.log", homedir, APPBASENAME, APPBASENAME);
+            OSD_SetLogFile(logpath);
+        }
         else
-            Bstrcpy(cwd, APPBASENAME ".log");
-        OSD_SetLogFile(cwd);
-        Xfree(homedir);
+            OSD_SetLogFile(APPBASENAME ".log");
     }
     else
-#endif
-    OSD_SetLogFile(APPBASENAME ".log");
+        OSD_SetLogFile(APPBASENAME ".log");
+    Bfree(homedir);
 
     OSD_SetFunctions(GAME_drawosdchar,
                      GAME_drawosdstr,