tar: handle -m (--touch) switch, enabled by FEATURE_TAR_NOPRESERVE_TIME

function                                             old     new   delta
.rodata                                             2731    2779     +48
usage_messages                                       432     471     +39
tar_main                                             603     614     +11
tar_longopts                                         211     219      +8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 106/0)             Total: 106 bytes

Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
3 files changed