pythonGH-113225: Speed up pathlib.Path.glob() (python#113226)

Use `os.DirEntry.path` as the string representation of child paths, unless
the parent path is empty, in which case we use the entry `name`.

Lib/pathlib/__init__.py

@@ -301,7 +301,13 @@ def _scandir(self):
 
     def _make_child_entry(self, entry):
         # Transform an entry yielded from _scandir() into a path object.
-        return self._make_child_relpath(entry.name)
+        path_str = entry.name if str(self) == '.' else entry.path
+        path = self.with_segments(path_str)
+        path._str = path_str
+        path._drv = self.drive
+        path._root = self.root
+        path._tail_cached = self._tail + [entry.name]
+        return path
 
     def absolute(self):
         """Return an absolute version of this path

Misc/NEWS.d/next/Library/2023-12-17-04-43-57.gh-issue-113225.dhxhiZ.rst

@@ -0,0 +1 @@
+Speed up :meth:`pathlib.Path.glob` by using :attr:`os.DirEntry.path` where possible.