[build-configurations] Make BUILD_DIR configurable
Summary: Allows building from any directory. This makes cleaning up the build dir predictable when executing from other scripts, thereby making them more robust.
ABC_BUILD_NAME=build-without-wallet ./build-configurations.sh # default ABC_BUILD_NAME=build-without-wallet BUILD_DIR=../../build-test ./build-configurations.sh # Make sure build works as expected when the build dir doesn't exist rm -rf ../../build ABC_BUILD_NAME=build-without-wallet ./build-configurations.sh
Reviewers: #bitcoin_abc, deadalnix
Reviewed By: #bitcoin_abc, deadalnix
Differential Revision: https://reviews.bitcoinabc.org/D4213