py3: use r'' to prevent conversion to bytes by transformer

py3: use r'' to prevent conversion to bytes by transformer

--- a/hgext/share.py	Thu Jun 22 03:22:30 2017 +0530
+++ b/hgext/share.py	Thu Jun 22 03:24:12 2017 +0530
@@ -132,7 +132,7 @@
     if pool:
         pool = util.expandpath(pool)
 
-    opts['shareopts'] = dict(
+    opts[r'shareopts'] = dict(
         pool=pool,
         mode=ui.config('share', 'poolnaming', 'identity'),
     )