Merge with Coinzen-Devcoin 0.9.2 and Bitcoin 22.0.0 (Bounty: 100M DVC)

[DevElCuy]

There is a more up to date version of Devcoin that was contributed by @sidhujag

https://github.com/coinzen/devcoin0.9.2MM/blob/master/src/clientversion.h

The reported version of current official devcoin is 0.8.5

https://github.com/devcoin/core/blob/master/src/clientversion.h

So we are still very far

[DevElCuy]

Devcoin 0.9.2 is older than OpenSSL 1.1.x, it means that a lot of fixes we already figured out would need rework. For example:

https://github.com/devcoin/core/pull/45/commits

Also, there are many old branches left by @belovachap and @sidhujag. Branch belovachap_devcoin0.9.2 was merged into devcoin0.9.2, yet it has one extra commit worth to rescue: 17d3bb3. Branches belovachap_1.0.0dev and 1.0.0dev are experimental versions of devcoin0.9.2, we can safely ignore them.

Additionally, commits at devcoin0.9.2MM are very important, because they show the steps to convert bitcoin into devcoin, we can learn a lot from @sidhujag's work.

Last but not least, from BIP 173 (Bitcoin 0.16.0) wallets have bech32 address format set by default, it should be set back P2PKH format for Devcoin.

[DevElCuy]

For the record, Devcoin Core 22.0.0 is being worked into branch 22.x, so we need to rename this issue