The CONFIG_APP_LINK_WITH_POSIX_SUBSYS option was originally
present so that internal POSIX implementation headers would be
on the include path.
There is no implicit need for any app or library to include
private POSIX headers. Instead, the standard POSIX API should
be used.
Signed-off-by: Christopher Friedt <cfriedt@meta.com>
Previously, the POSIX shell utilities were intermixed with the
POSIX API implementation.
The POSIX shell utilities only depend on the public POSIX API,
so it makes sense to keep them in a separate subdirectory.
Signed-off-by: Christopher Friedt <cfriedt@meta.com>