merge: do not warn about copy and rename in the same transaction (issue2113)

mercurial/copies.py

@@ -285,7 +285,7 b' def mergecopies(repo, c1, c2, ca):'
 
     diverge2 = set()
     for of, fl in diverge.items():
-        if len(fl) == 1 or of in c2:
+        if len(fl) == 1 or of in c1 or of in c2:
             del diverge[of] # not actually divergent, or not a rename
         else:
             diverge2.update(fl) # reverse map for below

tests/test-rename-merge1.t

@@ -95,9 +95,6 b" We'd rather not warn on divergent rename"
   $ hg up c761c6948de0
   1 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg up
-  note: possible conflict - b was renamed multiple times to:
-   b3
-   b4
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
 
 Check for issue2642