Merge branch 'bc/hash-independent-tests-part-8'

Preparation for SHA-256 migration continues. * bc/hash-independent-tests-part-8: (21 commits) t6024: update for SHA-256 t6006: make hash size independent t6000: abstract away SHA-1-specific constants t5703: make test work with SHA-256 t5607: make hash size independent t5318: update for SHA-256 t5515: make test hash independent t5321: make test hash independent t5313: make test hash independent t5309: make test hash independent t5302: make hash size independent t4060: make test work with SHA-256 t4211: add test cases for SHA-256 t4211: move SHA-1-specific test cases into a directory t4013: make test hash independent t3311: make test work with SHA-256 t3310: make test work with SHA-256 t3309: make test work with SHA-256 t3308: make test work with SHA-256 t3206: make hash size independent ...