busybox

ls: make -v and -X actually work as intended

function                                             old     new   delta
strverscmp                                             -     236    +236
sortcmp                                              186     254     +68
static.result_type                                     -      60     +60
static.next_state                                     12      16      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>