Stacked changes continue being stacked downstream.

Previously, if change A and B were uplaoded, where Bs first parent was
A, then the first parents of both A and B were HEAD of the downstream
branch.
Now, if changes A and B are uploaded, where Bs first parent is A, then for
downstream A' and B', the first parent of B' should be A'.

Change-Id: I09a9abc6320129f64958859efc2e379214903e54
2 files changed
tree: 4cefc9dfbf1a9a9aae25645dc8e530817cdb6c14
  1. src/
  2. .gitignore
  3. BUILD
  4. external_plugin_deps.bzl
  5. LICENSE
  6. LICENSE-re2j