scripts: Added -Q/--query as alternative to --total

This better matches the runners' new -Q/--query-define flag, and, thanks
to some argparse trickery, is simpler implementation wise.

Example:

  $ ./scripts/code.py lfs3.o -Qsize
      66570

  $ ./scripts/stack.py -Qlimit lfs3.ci
       3312

The only downside is this takes the --small-table shortform flag, but
--small-table doesn't really need a shortform flag.

Makefile

@@ -486,7 +486,7 @@ summary-diff sizes-diff: $(OBJ) $(CI)
 			-fstack='max(stack_limit)' \
 			-fctx='max(ctx_size)' \
 			-o-) \
-		-bbuild -CBEFORE -Q $(SUMMARYFLAGS))
+		-bbuild -CBEFORE --small-table $(SUMMARYFLAGS))
 
 
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