tar: conditionally don't wait for vforked child to exec, as it always
works right on Linux, and anyway mayresult only on less-than-clear error
message only, it will not cause tar to misbehave.
function old new delta
open_transformer 98 80 -18
writeTarFile 714 547 -167
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-185) Total: -185 bytes
text data bss dec hex filename
770651 1051 10764 782466 bf082 busybox_old
770463 1051 10764 782278 befc6 busybox_unstripped
3 files changed