tweakdefaults: turn on ui.statuscopies

Seems obviously useful and probably off by default for historical
reasons.

Differential Revision: https://phab.mercurial-scm.org/D1444

mercurial/ui.py

@@ -49,6 +49,8 b' tweakrc = """'
 [ui]
 # The rollback command is dangerous. As a rule, don't use it.
 rollback = False
+# Make `hg status` report copy information
+statuscopies = yes
 
 [commands]
 # Make `hg status` emit cwd-relative paths by default.

tests/test-status.t

@@ -572,6 +572,10 b' using ui.statuscopies setting'
   $ hg st --config ui.statuscopies=false
   M a
   R b
+  $ hg st --config ui.tweakdefaults=yes
+  M a
+    b
+  R b
 
 using log status template (issue5155)
   $ hg log -Tstatus -r 'wdir()' -C