include Package proto into Result proto

recipe_engine/package.py

Index: recipe_engine/package.py
diff --git a/recipe_engine/package.py b/recipe_engine/package.py
index bd0ebf1ea48842beaa5bc6257c35721ac116ab03..a53fd7450a766414fffafe2d7438de06e842f7e1 100644
--- a/recipe_engine/package.py
+++ b/recipe_engine/package.py
@@ -303,6 +303,7 @@ class PathRepoSpec(RepoSpec):
   """A RepoSpec implementation that uses a local filesystem path."""
 
   def __init__(self, project_id, path):
+    assert os.path.isabs(path), path
     self.project_id = project_id
     self.path = path
 
@@ -622,7 +623,7 @@ class PackageDeps(object):
                    them.
       overrides: if not None, a dictionary of project overrides. Dictionary keys
                  are the `project_id` field to override, and dictionary values
-                 are the override path.
+                 are the absolute override path.
     """
     context = PackageContext.from_proto_file(repo_root, proto_file, allow_fetch,
                                              deps_path=deps_path)