[PATCH 2 of 4] context: also take all other arguments than `patch.diff` accept

[Boris Feld]

# HG changeset patch
# User Boris Feld <boris.feld at octobus.net>
# Date 1527082300 -7200
#      Wed May 23 15:31:40 2018 +0200
# Node ID 2f2232e5f0b60a3dd591ea16dfffc3c0a050acdc
# Parent  4e013ebfa2c64f1849cb3a4242c47da981b35198
# EXP-Topic diff-cleanup
# Available At https://bitbucket.org/octobus/mercurial-devel/
#              hg pull https://bitbucket.org/octobus/mercurial-devel/ -r 2f2232e5f0b6
context: also take all other arguments than `patch.diff` accept

This is needed to use `context.diff` as a full replacement of `patch.diff`

diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -294,14 +294,19 @@ class basectx(object):
                               auditor=r.nofsauditor, ctx=self,
                               listsubrepos=listsubrepos, badfn=badfn)
 
-    def diff(self, ctx2=None, match=None, opts=None):
+    def diff(self, ctx2=None, match=None, changes=None, opts=None,
+            losedatafn=None, prefix='', relroot='', copy=None,
+            hunksfilterfn=None, diffopts=None):
         """Returns a diff generator for the given contexts and matcher"""
         if ctx2 is None:
             ctx2 = self.p1()
         if ctx2 is not None:
             ctx2 = self._repo[ctx2]
         diffopts = patch.diffopts(self._repo.ui, pycompat.byteskwargs(opts))
-        return patch.diff(self._repo, ctx2, self, match=match, opts=diffopts)
+        return patch.diff(self._repo, ctx2, self, match=match, changes=changes,
+                          opts=diffopts, losedatafn=losedatafn, prefix=prefix,
+                          relroot=relroot, copy=copy,
+                          hunksfilterfn=hunksfilterfn)
 
     def dirs(self):
         return self._manifest.dirs()