aa76108315 bitcoin: secp256k1 global-context feature re-export (Jose Storopoli)
Pull request description:
Often we want to have the `global-context` feature in `secp256k1` without having to add manually the `secp256k1` dependency and enabling the `global-context` feature.
Having the ability to do that directly from `bitcoin` without having to add `secp256k1` and do the whole tango of tightly coupling the two dependecies versions together, e.g. `bitcoin` `0.32.x` and `secp256k1` `0.29.x` would be really nice and would also simplify a lot code maintainability for anyone who depends on bitcoin.
This needs to be backported to `0.32.x`, which I'll gladly do as well.
ACKs for top commit:
luisschwab:
ACK aa76108315
tcharding:
ACK aa76108315
Tree-SHA512: ff0e0016a6bf7cadf42cb40857393acace538fc3fb5214b89d4222a2fe570e9ae79617ae276273eefc34c3b68a64100bb22a9c01f9075cc3ed0705d7a264b9b3