Change Details

Borrowed from the PR -- run from build dir ``` valgrind --suppressions=../contrib/valgrind.supp src/test/test_bitcoin valgrind --suppressions=../contrib/valgrind.supp src/bench/bitcoin-bench -evals=1 -scaling=0.0 ```

Borrowed from the PR -- run from build dir ``` valgrind --suppressions=../contrib/valgrind.supp --child-silent-after-fork=yes src/test/test_bitcoin valgrind --suppressions=../contrib/valgrind.supp src/bench/bitcoin-bench -evals=1 -scaling=0.0 ```

Borrowed from the PR -- run from build dir ``` valgrind --suppressions=../contrib/valgrind.supp --child-silent-after-fork=yes src/test/test_bitcoin valgrind --suppressions=../contrib/valgrind.supp src/bench/bitcoin-bench -evals=1 -scaling=0.0 ```