py3: handle opts correctly for `hg add`

py3: handle opts correctly for `hg add`

opts in add command were passed again to cmdutil.add() as kwargs so we need
to convert them again to str. Intstead we convert them to bytes when passing
scmutil.match(). Opts handling is also corrected for all the functions which
are called from cmdutil.add().

--- a/mercurial/cmdutil.py	Mon Apr 24 04:32:04 2017 +0530
+++ b/mercurial/cmdutil.py	Tue Apr 25 01:52:30 2017 +0530
@@ -2279,7 +2279,7 @@
         sub = wctx.sub(subpath)
         try:
             submatch = matchmod.subdirmatcher(subpath, match)
-            if opts.get('subrepos'):
+            if opts.get(r'subrepos'):
                 bad.extend(sub.add(ui, submatch, prefix, False, **opts))
             else:
                 bad.extend(sub.add(ui, submatch, prefix, True, **opts))
@@ -2287,7 +2287,7 @@
             ui.status(_("skipping missing subrepository: %s\n")
                            % join(subpath))
 
-    if not opts.get('dry_run'):
+    if not opts.get(r'dry_run'):
         rejected = wctx.add(names, prefix)
         bad.extend(f for f in rejected if f in match.files())
     return bad

--- a/mercurial/commands.py	Mon Apr 24 04:32:04 2017 +0530
+++ b/mercurial/commands.py	Tue Apr 25 01:52:30 2017 +0530
@@ -255,8 +255,7 @@
     Returns 0 if all files are successfully added.
     """
 
-    opts = pycompat.byteskwargs(opts)
-    m = scmutil.match(repo[None], pats, opts)
+    m = scmutil.match(repo[None], pats, pycompat.byteskwargs(opts))
     rejected = cmdutil.add(ui, repo, m, "", False, **opts)
     return rejected and 1 or 0
 

--- a/mercurial/subrepo.py	Mon Apr 24 04:32:04 2017 +0530
+++ b/mercurial/subrepo.py	Tue Apr 25 01:52:30 2017 +0530
@@ -1771,7 +1771,7 @@
                 if exact:
                     rejected.append(f)
                 continue
-            if not opts.get('dry_run'):
+            if not opts.get(r'dry_run'):
                 self._gitcommand(command + [f])
 
         for f in rejected: