The pppstart expected that a driver write would somehow magically
process all data passed to the write function. Because ppp disables all
buffering that originally has been in termios, that assumption is not
true for all but polled drivers.
With this patch, the pppstart now gets and processes the feedback that
is returned from the driver via rtems_termios_dequeue_characters.
Fixes#4494
The following files are now provided by Newlib:
* arpa/inet.h
* net/if.h
* netinet/in.h
* netinet/tcp.h
* sys/socket.h
* sys/uio.h
* sys/un.h
The <sys/param.h> and <sys/cpuset.h> are now compatible enough to be
used directly.
Update #2833.
