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

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
  ...