PR 577/bsps
* console.c: The console_close() method currently calls StopRemoteTx()
on all invocations. It should should be ok for last close only but
not for any others. If you open a port multiple times, you only want
to call StopRemoteTx() only as part of the last close.
PR 501/rtems_misc
* console.c: console_open disables ICANON on non-console port, which
should be ok for the first open but not for subsequent ones. If you
open one serial port, you will configure it, when you reopen it you
will lost the ICANON parameters if you had put it. Should be done by
console only at first open.
