copies-tests: add a `h` to the root commit (for chain merge tests)

This will be useful for incoming new test cases. We need a new file to rename
around.

Differential Revision: https://phab.mercurial-scm.org/D8239

tests/test-copies-chain-merge.t

@@ -23,10 +23,11 b' use git diff to see rename'
 
 Add some linear rename initialy
 
-  $ touch a b
-  $ hg ci -Am 'i-0 initial commit: a b'
+  $ touch a b h
+  $ hg ci -Am 'i-0 initial commit: a b h'
   adding a
   adding b
+  adding h
   $ hg mv a c
   $ hg ci -Am 'i-1: a -move-> c'
   $ hg mv c d
@@ -36,7 +37,7 b' Add some linear rename initialy'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 And having another branch with renames on the other side
@@ -54,7 +55,7 b' And having another branch with renames o'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Have a branching with nothing on one side
@@ -71,7 +72,7 b' Have a branching with nothing on one sid'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 
@@ -107,7 +108,7 b' Merge the two branches we just defined ('
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Create a branch that delete a file previous renamed
@@ -124,7 +125,7 b' Create a branch that delete a file previ'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Merge:
@@ -168,7 +169,7 b' and recreate an unrelated file after the'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Create a branch that delete a file previous renamed and recreate it
@@ -190,7 +191,7 b' Create a branch that delete a file previ'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Merge:
@@ -232,7 +233,7 b' Note:'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Having another branch renaming a different file to the same filename as another
@@ -253,7 +254,7 b' Having another branch renaming a differe'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Merge:
@@ -290,7 +291,7 b' Merge:'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 Note:
@@ -459,7 +460,7 b' not a merge.'
   |
   o  1 i-1: a -move-> c]
   |
-  o  0 i-0 initial commit: a b]
+  o  0 i-0 initial commit: a b h]
   
 
 This `hg log` output is correct