(Based on a patch from flupzor; bug #8206)

This will get it building on systems that lack stdint.h

This is meant to avoid conflict with the built-in log() function in
math.h.  It resolves ticket 7599.  First reported by dhill.

This was generated with the following perl script:

 #!/usr/bin/perl -w -i -p

 s/\blog\(LOG_(ERR|WARN|NOTICE|INFO|DEBUG)\s*,\s*/log_\L$1\(/g;

 s/\blog\(/tor_log\(/g;

Fixes bug 7935.  Reported by 'oftc_must_be_destroyed'.

This now matches upstream at version 59a896970a1ad0a6cd7d0.
(Adam took my patches.)

There was one place in curve25519-donna-c64 that was relying on
unaligned access and relying on little-endian values.  This patch
fixes that.

I've sent Adam a pull request.

This is copied from Adam Langley's curve25519-donna package, as
of commit 09427c9cab32075c06c3487aa01628030e1c5ae7.

Otherwise we break openbsd headers.

Fixes bug 7293; bug not on any released Tor.

Apparently winnt.h defines a different SLIST_ENTRY of its own.

Bug not in any version of Tor.

See 7105

My scripts missed it because it was in eventdns.c, which was in ext,
but it _was_ using one of our identifiers.  That's probably because
eventdns.c has drifted a bit since we forked it.

I'm not going to fix the other reserved identifiers in eventdns.c,
since that would make it drift even more.

There are as many divergent implementations of sys/queue.h as there
are operating systems shipping it, it would seem.  They have some code
in common, but have drifted apart, and have added other stuff named
differently.  So I'm taking a relatively sane one, and hoping for the
best.

I'm taking OpenBSD's in particular because of the lack of external
dependencies, the presence of a CIRCLEQ (we could use one of those in
places), and the liberal licensing terms.

I'm naming the file tor_queue.h, since historically we've run into
trouble having headers with the same names as system headers (log.h,
for example.)

The rationale for treating these files differently is that we should
be checking upstream for changes as applicable, and merging changes
upstream as warranted.