Issue #9850: Fixed macpath.join() for empty first component. Patch by

Oleg Oshmyan.

diff --cc Misc/NEWS
index e96b6599e494a5b33c0a4b0aea85f33864362d29,0b8ba0c1054cd49cb1666ff746f10d0be20e68be..4fd4f174ac1f728134e344af6eb15d43d6e9b199
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -145,38 -79,10 +145,41 @@@ Core and Builtin
  Library
  -------
  
++- Issue #9850: Fixed macpath.join() for empty first component.  Patch by
++  Oleg Oshmyan.
++
 +- Issue #5309: distutils' build and build_ext commands now accept a ``-j``
 +  option to enable parallel building of extension modules.
 +
 +- Issue #22448: Improve canceled timer handles cleanup to prevent
 +  unbound memory usage. Patch by Joshua Moore-Oliva.
 +
 +- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when
 +  used in the with statement in generator.
 +
 +- Issue #22362: Forbidden ambiguous octal escapes out of range 0-0o377 in
 +  regular expressions.
 +
 +- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
 +  directory attributes.
 +
 +- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory
 +  records if allowZip64 is false.
 +
 +- Issue #22278: Fix urljoin problem with relative urls, a regression observed
 +  after changes to issue22118 were submitted.
 +
 +- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re
 +  module.  Removed trailing spaces in debugging output.
 +
 +- Issue #22423: Unhandled exception in thread no longer causes unhandled
 +  AttributeError when sys.stderr is None.
 +
 +- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects
 +  line buffering, rather than block buffering.  Patch by Akira Li.
 +
  - Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now
 -  a method.  Since EmailMessage is provisional, we can change the API in a
 -  maintenance release, but we use a trick to remain backward compatible with
 -  3.4.0/1.
 +  a method.
  
  - Issue #21079: Fix email.message.EmailMessage.is_attachment to return the
    correct result when the header has parameters as well as a value.