busybox

ls: LIST_ID_NAME/ID_NUMERIC/LOPT/LONG are the same, merge as LONG

Also, handle -n and --full-time using option_mask32

function                                             old     new   delta
scan_and_display_dirs_recur                          548     545      -3
display_single                                      1053    1039     -14
ls_main                                              777     736     -41
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(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-58)             Total: -58 bytes

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