Merge branch 'jz/patch-id'

Merge branch 'jz/patch-id'

A new "--include-whitespace" option is added to "git patch-id", and
existing bugs in the internal patch-id logic that did not match
what "git patch-id" produces have been corrected.

* jz/patch-id:
  builtin: patch-id: remove unused diff-tree prefix
  builtin: patch-id: add --verbatim as a command mode
  patch-id: fix patch-id for mode changes
  builtin: patch-id: fix patch-id with binary diffs
  patch-id: use stable patch-id for rebases
  patch-id: fix stable patch id for binary / header-only