more fixes for revised 'sortloot'

After some permutation of commands which displayed items, the 'd'
command presented a prompt with the list of letters scrambled (in
loot order or pack order rather than invlet order), so explicitly
sort when getobj operates.  Done for ggetobj too.

For menustyle:Traditional, ',' followed by 'm' presented a pickup
list in pile order even when sortloot was 'l' or 'f'.  That was an
unintentional change during the 'revamp'.

src/pickup.c

@@ -823,7 +823,7 @@ boolean FDECL((*allow), (OBJ_P)); /* allow function */
         return 1;
     }
 
-    if (sorted) {
+    if (sorted || flags.sortloot != 'n') {
         sortloot(&olist,
                  (((flags.sortloot == 'f'
                     || (flags.sortloot == 'l' && !(qflags & USE_INVLET)))