Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (e.g. depot_tools) into downstream projects
(e.g. tools/build).


More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.
recipe_engine:
  https://crrev.com/497f5b7f92cea8e5273d56cc3cba876fb18b42d9 [doc/recipes.py] fix issue when running recipes.py from . (iannucci@chromium.org)


TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I6bae466acee1d5131d689a01803780dbea2ca174
Reviewed-on: https://chromium-review.googlesource.com/499929
Reviewed-by: <recipe-roller@chromium.org>
Commit-Queue: <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -15,7 +15,7 @@
   "deps": {
     "recipe_engine": {
       "branch": "master",
-      "revision": "e90c11af854574dd68edd0e7c7a5e04ceb49ffd0",
+      "revision": "497f5b7f92cea8e5273d56cc3cba876fb18b42d9",
       "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
     }
   },

recipes/recipes.py

@@ -190,7 +190,7 @@ def main():
 
   repo_root = os.path.abspath(
     _git_output(['rev-parse', '--show-toplevel'],
-                cwd=os.path.dirname(__file__)).strip())
+                cwd=os.path.abspath(os.path.dirname(__file__))).strip())
 
   # TODO(iannucci): Actually make the location of recipes.cfg configurable.
   recipes_cfg_path = os.path.join(repo_root, 'infra', 'config', 'recipes.cfg')