revlog: update signature of dummy addgroup() in bundlerepo and unionrepo

Per c8b6ed51386b, 2f5c45fe3a3b and 00e3f909907f.

mercurial/bundlerepo.py

@@ -164,7 +164,7 b' class bundlerevlog(revlog.revlog):'
 
     def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
         raise NotImplementedError
-    def addgroup(self, revs, linkmapper, transaction):
+    def addgroup(self, deltas, transaction, addrevisioncb=None):
         raise NotImplementedError
     def strip(self, rev, minlink):
         raise NotImplementedError

mercurial/unionrepo.py

@@ -126,7 +126,7 b' class unionrevlog(revlog.revlog):'
 
     def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
         raise NotImplementedError
-    def addgroup(self, revs, linkmapper, transaction):
+    def addgroup(self, deltas, transaction, addrevisioncb=None):
         raise NotImplementedError
     def strip(self, rev, minlink):
         raise NotImplementedError