Prop249: set RELAY_EARLY bit correctly on fragmented EXTEND cells; enforce it correctly.

The RELAY_EARLY bit gets a tiny bit more complicated with prop249; let's make sure we implement it correctly.

changed milestone to %Tor: unspecified

added 034-included-20180328 034-roadmap-subtask 034-triage-20180328 035-roadmap-subtask 035-triaged-in-20180711 component::core tor/tor milestone::Tor: unspecified parent::24986 priority::medium severity::normal status::new tor-cell tor-circuit trunnel type::enhancement labels

Trac:
Keywords: tor-cell tor-circuit trunnel deleted, tor-circuit, 034-roadmap-subtask, trunnel, tor-cell added

Trac:
Keywords: N/A deleted, 034-triage-20180328 added

Trac:
Keywords: N/A deleted, 034-included-20180328 added

These are still worth doing, but I don't see them as likely to happen before our freeze in 4 days, and nobody is currently assigned to them. Deferring them to 0.3.5

Trac:
Type: defect to enhancement
Milestone: Tor: 0.3.4.x-final to Tor: 0.3.5.x-final

Trac:
Keywords: N/A deleted, 035-roadmap-subtask added

Trac:
Keywords: N/A deleted, 035-triaged-in-20180711 added

We won't get PQ or wide-create done in this release. :/

Trac:
Milestone: Tor: 0.3.5.x-final to Tor: unspecified

moved to tpo/core/tor#25652 (closed)