Fix race in parallel hash join batch cleanup, take II.

Revert "Fix race in Parallel Hash Join batch cleanup."

Fix race in Parallel Hash Join batch cleanup.

Move SHA2 routines to a new generic API layer for crypto hashes

Change SHA2 implementation based on OpenSSL to use EVP digest routines

Fix handling of redundant options with COPY for "freeze" and "header"

Remove logging.c from the shared library of src/common/

Revert "Change SHA2 implementation based on OpenSSL to use EVP digest routines"

Make index_set_state_flags() transactional

Remove isolation test reindex-partitions