Previously the sanitizers are forcibly disabled as they were found to be
incompatible with Rust code. The nightly channel of Rust, however, now
has some fixes which should make this disabling no longer necessary.

Bug not in any released Tor.

test-stem would have caught this.

Various places in our code try to activate these events or check
their status, so we should make sure they're initialized as early as
possible.  Fixes bug 27861; bugfix on 0.3.5.1-alpha.

When freeing a configuration object from confparse.c in
dump_config(), we need to call the appropriate higher-level free
function (like or_options_free()) and not just config_free().

This only happens with options (since they're the one where
options_validate allocates extra stuff) and only when running
--dump-config with something other than minimal (since
OPTIONS_DUMP_MINIMAL doesn't hit this code).

Fixes bug 27893; bugfix on 0.3.2.1-alpha.

This commit just moves the code to two separate files. The geoip
code still has a few needless dependencies on core/* and features/*.

This is preparation for splitting geoip.c into stats and non-stats
portions.

It differs from the rest of the rephist code in that it's actually
necessary for Tor to operate, so it should probably go somewhere
else.  I'm not sure where yet, so I'll leave it in the same
directory, but give it its own file.

Make them only include the headers that they needed, and sort their
headers while we're at it.

Since this is completely core functionality, I'm putting it in
core/mainloop, even though it depends on feature/hibernate. We'll
have to sort that out in the future.

(It turns out that some of the functions in router.h didn't even
exist any more, so I just got to delete their declarations completely.)

Note that I haven't separated the headers yet (there's still an

This is preparation for having a routermode.h as well

This is also used by onion services, so it needs to go in another
module.

Bug 27781; bugfix on 0.3.5.1-alpha.

Because with arm on OpenSSL <1.1 we don't define USE_EVP_AES_CTR, we
need to include crypto_util.h here.

Fixes a stem test failure; bugfix on c7ce6b98. Bug
not in any released Tor.