notify: explicitly honor all diffopts

notify: explicitly honor all diffopts

The notify output doesn't seem to be parseable anyway, what with the maxdiff
config option. Plus it is designed mainly for servers where hopefully the
admins are doing sensible things.

--- a/hgext/notify.py	Tue Nov 18 22:13:05 2014 -0800
+++ b/hgext/notify.py	Tue Nov 18 21:47:47 2014 -0800
@@ -341,7 +341,8 @@
         maxdiff = int(self.ui.config('notify', 'maxdiff', 300))
         prev = ctx.p1().node()
         ref = ref and ref.node() or ctx.node()
-        chunks = patch.diff(self.repo, prev, ref, opts=patch.diffopts(self.ui))
+        chunks = patch.diff(self.repo, prev, ref,
+                            opts=patch.diffallopts(self.ui))
         difflines = ''.join(chunks).splitlines()
 
         if self.ui.configbool('notify', 'diffstat', True):