This changes from `FASYNC` to `O_ASYNC`, `FNDELAY` to `O_NONBLOCK`,
and `O_NDELAY` to `O_NONBLOCK`. These are the modern names.
`O_NONBLOCK` is part of the POSIX standard. However, `O_ASYNC` is
specific to Linux and BSD. It is not available on Solaris, where
we still need to use `FASYNC`. Also, the behavior of having I/O
trigger a `SIGIO` signal is not in POSIX, since the `SIGIO` signal
is not in POSIX. Instead, it is only the behavior of having `SIGURG`
being signalled for out of band data that is specified.
We also takes this opportunity to collapse some multi-line calls
to get the flags, store it into a temp, and then set them, to
just doing it in one line, skipping the stored temporary value.
We also change one instance of `65535 - FNDELAY` to `~O_NONBLOCK`.
Closesinterlisp/medley#85.
* Remove static char *id = from all source files.
The same information is included in a comment in each source file.
* Remove unused template file 'id'