Change Details

This makes it easier to individually add and configure each step for each configuration, and makes the whole build definition easier to read. The environment setup is now in it's own script which can be sourced multiple times, allowing to use a single build script for bitcoin-abc and secp256k1. As a side effect the functional tests are no longer run with the next upgrade enabled with the `asan` and `ubsan` configurations, and use the standard cutoff. Depends on D3992.

This makes it easier to individually add and configure each step for each configuration, and makes the whole build definition easier to read. As a (good) side effect the functional tests are no longer run with the next upgrade enabled with the `asan` and `ubsan` configurations, and use the standard cutoff. Depends on D3992.

This makes it easier to individually add and configure each step for each configuration, and makes the whole build definition easier to read. The environment setup is now in it's own script which can be sourced multiple times, allowing to use a single build script for bitcoin-abc and secp256k1. As aAs a (good) side effect the functional tests are no longer run with the next upgrade enabled with the `asan` and `ubsan` configurations, and use the standard cutoff. Depends on D3992.