Windows (unrelated to select). select() can never set errno
to EINTR on Windows.

http://www.greenhills.co.uk/mak/gentoo/curl-eintr-bug.c, I now made the
select() and poll() calls properly loop if they return -1 and errno is
EINTR. glibc docs for this is found here:
http://www.gnu.org/software/libc/manual/html_node/Interrupted-Primitives.html

This last link says BSD doesn't have this "effect". Will there be a problem
if we do this unconditionally?
S: ----------------------------------------------------------------------

Added dependencies.

select() overhaul fix.

to fail in mysterious ways.

shadow our public headers with the former names.

Force including ../include/curl/easy.h.

Force including ../include/curl/multi.h.

using a custom Host: header and curl fails to send a request on a re-used
persistent connection and thus creates a new connection and resends it. It
then sent two Host: headers. Cyrill's analysis was posted here:
http://curl.haxx.se/mail/archive-2005-01/0022.html

problem with the version byte and the check for bad versions. Bruce has lots
of clues on this, and based on his suggestion I've now removed the check of
that byte since it seems to be able to contain 1 or 5.

handles. Include multi.h to get proto.

#1098843. In short, a shared DNS cache was setup for a multi handle and when
the shared cache was deleted before the individual easy handles, the latter
cleanups caused read/writes to already freed memory.

remote certificate name when it didn't match the used host name.

test, see test 509