Merge branch 'bc/hash-independent-tests-part-7'

Preparation of test scripts for the day when the object names will use SHA-256 continues. * bc/hash-independent-tests-part-7: t5604: make hash independent t5601: switch into repository to hash object t5562: use $ZERO_OID t5540: make hash size independent t5537: make hash size independent t5530: compute results based on object length t5512: abstract away SHA-1-specific constants t5510: make hash size independent t5504: make hash algorithm independent t5324: make hash size independent t5319: make test work with SHA-256 t5319: change invalid offset for SHA-256 compatibility t5318: update for SHA-256 t4300: abstract away SHA-1-specific constants t4204: make hash size independent t4202: abstract away SHA-1-specific constants t4200: make hash size independent t4134: compute appropriate length constant t4066: compute index line in diffs t4054: make hash-size independent