Merge branch 'bc/hash-independent-tests'

Various tests have been updated to make it easier to swap the hash function used for object identification. * bc/hash-independent-tests: t5318: use test_oid for HASH_LEN t1407: make hash size independent t1406: make hash-size independent t1405: make hash size independent t1400: switch hard-coded object ID to variable t1006: make hash size independent t0064: make hash size independent t0002: abstract away SHA-1 specific constants t0000: update tests for SHA-256 t0000: use hash translation table t: add test functions to translate hash-related values