da9cdd6759
This removes the FAILING state and adds compulsory signalling during a new MUST_SIGNAL phase during the last retarget period prior to the timeout height. This ensures that if a deployment occurs using bip8 with lockinontimeout=false and timeoutheight=N, that a later deployment using bip8 with lockinontimeout=true and timeoutheight=K, where K<N that any chain where LOCKED_IN is reached prior to height K, will be accepted as valid by nodes using either set of deployment parameters. It also ensures that the soft-fork's changed rules are only enforced on chain a retarget period after signalling indicates enforcement is expected (which was not previously the case if the FAILING to ACTIVE transition took place). |
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