This patch adds a new compat_libevent.[ch] set of files, and moves our
Libevent compatibility and utilitity functions there. We build them
into a separate .a so that nothing else in src/commmon depends on
Libevent (partially fixing bug 507).
Also, do not use our own built-in evdns copy when we have Libevent
2.0, whose evdns is finally good enough (thus fixing Bug 920).
Now, when you call tor --digests, it dumps the SHA1 digest of each
source file that Tor was built with. We support both 'sha1sum' and
'openssl sha1'. If the user is building from a tarball and they
haven't edited anything, they don't need any program that calculates
SHA1. If they _have_ modified a file but they don't have a program to
calculate SHA1, we try to build so we do not output digests.
Implement code to manually force the OpenSSL client cipher list to match the one recommended in proposal 124, *even if* we do not know all those ciphers. This is a bit of a kludge, but it is at least decently well commented.
svn:r15173
Add new stacklike, free-all-at-once memory allocation strategy. Use it when parsing directory information. This helps parsing speed, and may well help fragmentation some too. hidden-service-related stuff still uses the old tokenizing strategies.
svn:r14194
Add openbsd memory allocator discussed in bug 468, to make it easier for linux users to get non-awful allocation patterns. Use --enable-openbsd-malloc to turn it on. Needs more testing.
svn:r13544
poll-but-sometimes-select mess. This will let us use faster async cores
(like epoll, kpoll, and /dev/poll), and hopefully work better on Windows
too.
There are some fairly nasty changes to main.c here; this will almost
certainly break something. But hey, that's what alphas are for.
svn:r3341
