For the utilities provided by coreutils
but required before coreutils is built,
if coreutils is actually built already, prefer a symlink to
the built versions instead of the host machine's version.
Tested-by: Georgi Valkov <gvalkov@gmail.com> # macOS
Signed-off-by: Michael Pratt <mcpratt@pm.me>
Link: https://github.com/openwrt/openwrt/pull/16522
Signed-off-by: Robert Marko <robimarko@gmail.com>