purge: avoid duplicate output for --print (issue4092) stable

purge: avoid duplicate output for --print (issue4092)

Now "hg purge -p" commands avoids printiing duplication of filenames.

Second patch is the test coverage of first patch which tells that '-p'
does not depend on whether ui.verbose is configured or not,that means it
is independent of '-v'.

--- a/hgext/purge.py	Mon Feb 24 18:48:48 2014 -0600
+++ b/hgext/purge.py	Tue Feb 25 06:30:21 2014 +0530
@@ -101,10 +101,12 @@
     status = repo.status(match=match, ignored=opts['all'], unknown=True)
 
     for f in sorted(status[4] + status[5]):
-        ui.note(_('removing file %s\n') % f)
+        if act:
+            ui.note(_('removing file %s\n') % f)
         remove(removefile, f)
 
     for f in sorted(directories, reverse=True):
         if match(f) and not os.listdir(repo.wjoin(f)):
-            ui.note(_('removing directory %s\n') % f)
+            if act:
+                ui.note(_('removing directory %s\n') % f)
             remove(os.rmdir, f)

--- a/tests/test-purge.t	Mon Feb 24 18:48:48 2014 -0600
+++ b/tests/test-purge.t	Tue Feb 25 06:30:21 2014 +0530
@@ -21,7 +21,7 @@
 delete an empty directory
 
   $ mkdir empty_dir
-  $ hg purge -p
+  $ hg purge -p -v
   empty_dir
   $ hg purge -v
   removing directory empty_dir