Check for orconns and use connection_or_close_for_error() when appropriate in connection_handle_write_impl()
Remove a piece of disabled code in choose_random_entry_impl().
choose_random_entry_impl(): Remove useless consider_exit_family.

The variable was useless since it was only toggled off in disabled code.

If the 'exit_family' smartlist is empty, we don't consider exit family
anyway.
Create skeleton for populate_live_entry_guards().

Now we are ready to move code from choose_random_entry_impl() to it.
Move code from choose_random_entry_impl() to the new function.

This commit only _moves_ code.
Fix the functionality of populate_live_entry_guards().
Constify aggressively in populate_live_entry_guards().
Make populate_live_entry_guards() more smoothly testable.
Make a few entrynodes.c functions testable.
Document choose_random_entry_impl() and populate_live_entry_guards().
Add some test descriptors to src/test/.
Functionify the descriptor age check so that we can NOP it in tests.
Add the entrynodes.c unit tests.
Basic entry_is_live() unittest.
Change the interface of entry_is_live() to take a bitmap.
Only active relays should be given HSDir

We should only assign a relay the HSDir flag if it is currently
considered valid. We can accomplish this by only considering active
relays, and as a consequence of this we also exclude relays that are
currently hibernating. Fixes #12573
Remove executable bit from control.c, router.c

Fix for 12512.
Change interface of router_descriptor_is_too_old().
Fix a bug where streams would linger forever when we had no dirinfo

fixes bug 8387; fix on 0.1.1.11-alpha (code), or on 0.2.4.10-alpha (behavior).
Update to latest curve25519-donna32