* Simplification.

tests/Makefile.am

tests/build-hook.sh

tests/common.sh.in

tests/dependencies.sh

tests/fallback.sh

tests/gc-concurrent.sh

tests/gc.sh

tests/hash.sh

tests/init.sh

tests/lang.sh

tests/locking.sh

tests/misc.sh

tests/nix-pull.sh

tests/nix-push.sh

tests/parallel.sh

tests/referrers.sh

tests/simple.sh

tests/substitutes.sh

tests/substitutes2.sh

tests/user-envs.sh