dtlogin: Fix up Options->Language menu

In dtlogin, you can select the language to switch to by selecting it
via Options->Language.  Unfortunately this was also including '.' and
'..', since this list is built dynamically by scanning a directory.

Now we screen out '.' and '..'.

cde/programs/dtlogin/util.c

@@ -1092,6 +1092,10 @@ ScanNLSDir(char *dirname)
 	{
 	    locale = dp->d_name;
 
+            if ( (strcmp(dp->d_name, ".") == 0) ||
+                 (strcmp(dp->d_name, "..") == 0) )
+              continue;
+
 	    if (locale[0] != '.' &&
                 LANGLISTSIZE > (int) (strlen(languageList)+strlen(locale)+2));
 	    {