util: unify unlinkpath

util: unify unlinkpath

Previously, there were two slightly different versions of unlinkpath between
windows and posix, but these differences were eliminated in previous patches.
Now we can unify these two code paths inside of the util module.

--- a/mercurial/posix.py	Tue Mar 21 06:50:28 2017 -0700
+++ b/mercurial/posix.py	Tue Mar 21 06:50:28 2017 -0700
@@ -536,19 +536,6 @@
 def makedir(path, notindexed):
     os.mkdir(path)
 
-def unlinkpath(f, ignoremissing=False):
-    """unlink and remove the directory if it is empty"""
-    try:
-        unlink(f)
-    except OSError as e:
-        if not (ignoremissing and e.errno == errno.ENOENT):
-            raise
-    # try removing directories that might now be empty
-    try:
-        removedirs(os.path.dirname(f))
-    except OSError:
-        pass
-
 def lookupreg(key, name=None, scope=None):
     return None
 

--- a/mercurial/util.py	Tue Mar 21 06:50:28 2017 -0700
+++ b/mercurial/util.py	Tue Mar 21 06:50:28 2017 -0700
@@ -136,7 +136,6 @@
 testpid = platform.testpid
 umask = platform.umask
 unlink = platform.unlink
-unlinkpath = platform.unlinkpath
 username = platform.username
 
 # Python compatibility
@@ -1605,6 +1604,19 @@
         else:
             self.close()
 
+def unlinkpath(f, ignoremissing=False):
+    """unlink and remove the directory if it is empty"""
+    try:
+        unlink(f)
+    except OSError as e:
+        if not (ignoremissing and e.errno == errno.ENOENT):
+            raise
+    # try removing directories that might now be empty
+    try:
+        removedirs(os.path.dirname(f))
+    except OSError:
+        pass
+
 def makedirs(name, mode=None, notindexed=False):
     """recursive directory creation with parent mode inheritance
 

--- a/mercurial/windows.py	Tue Mar 21 06:50:28 2017 -0700
+++ b/mercurial/windows.py	Tue Mar 21 06:50:28 2017 -0700
@@ -385,19 +385,6 @@
             break
         head, tail = os.path.split(head)
 
-def unlinkpath(f, ignoremissing=False):
-    """unlink and remove the directory if it is empty"""
-    try:
-        unlink(f)
-    except OSError as e:
-        if not (ignoremissing and e.errno == errno.ENOENT):
-            raise
-    # try removing directories that might now be empty
-    try:
-        removedirs(os.path.dirname(f))
-    except OSError:
-        pass
-
 def rename(src, dst):
     '''atomically rename file src to dst, replacing dst if it exists'''
     try: