Baseline:  d60ce2c7

Release Notes:

+ **[Incompatible]** This has the side effect of changing the message on unsuccessful builds from ``` FAILED: Build did NOT complete successfully (0 packages loaded) ``` to ``` ERROR: Build did NOT complete successfully ```
+ The new path variable `$(rlocationpath ...)` and its plural form `$(rlocationpaths ...)` can be used to expand labels to the paths accepted by the `Rlocation` function of runfiles libraries. This is the preferred way to access data dependencies at runtime and works on all platforms, even when runfiles are not enabled (e.g., on Windows by default).
+ The `aquery` and `cquery` commands now respect the `--query_file` flag just like the `query` command.
+ **[Incompatible]** the --experimental_async_execution flag is now a no-op.
+ **[Incompatible]** --experimental_replay_action_out_err is not a no-op.
+ **[Incompatible]** `cquery --output=files` also outputs source files.
+ removed outdated ct...