Fix typo in comment.

fix various typos in comments.

s/comatible/compatible/

fix typos in word "request(s)".

avoid attempting to print NULL.

src is too big these days to tolerate superfluous apostrophes. It's
"its", people!

fix unused variable warnings.

Fix violations of the sequence point rule.

don't truncate time_t

Yet another format string fix

Fix format string to unbreak i386 build

static + __printflike + __dead + format string fixes

Fix WARNS=4 issues (-Wshadow -Wcast-qual -Wextra -Wsign-compare)

Replace gcc initialisers with c99 initialisers.

* Don't include headers twice
* Remove a few trailing whitespaces
* Rearrange and join to one #if for some headers

Patch contributed by Slava Semushin <slava.semushin@gmail.com>
in private mail.

appease gcc -Wuninitialized

Add (unsigned char) cast to ctype functions
The argument rules suck.....

s/the the/the/ (only in sources that aren't regularly imported from
elsewhere).

snprintf

null commit

poll.h, not sys/poll.h

Minor simplification.

select() -> poll(), nanosleep()

die if fd_set overrun. (they're not setuid binary so it is not that critical)

Don't default the portname to devices that don't exist on NetBSD.