Issue #17046: merge from 3.3

diff --cc Lib/test/test_subprocess.py
Simple merge

diff --cc Misc/NEWS
index 027f5a72d822456938d8710431ccdbb41e9b858d,98357a4411bd402a9a0bbae47ebda67cfabf7442..868fb9ee693f8653daccadd240ff7417dfe68498
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -566,67 -441,58 +566,69 @@@ Librar
  
  - Issue #17666: Fix reading gzip files with an extra field.
  
 -- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
 -  Patch by Michael Foord.
 +- Issue #16475: Support object instancing, recursion and interned strings
 +  in marshal
  
 -- Issue #17572: Avoid chained exceptions while passing bad directives to
 -  time.strptime().  Initial patch by Claudiu Popa.
 +- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
  
 -- Issue #17435: threading.Timer's __init__ method no longer uses mutable
 -  default values for the args and kwargs parameters.
 +- Issue #16795: On the ast.arguments object, unify vararg with varargannotation
 +  and kwarg and kwargannotation. Change the column offset of ast.Attribute to be
 +  at the attribute name.
  
 -- Issue #17526: fix an IndexError raised while passing code without filename to
 -  inspect.findsource().  Initial patch by Tyler Doyle.
 +- Issue #17434: Properly raise a SyntaxError when a string occurs between future
 +  imports.
  
 -- Issue #16550: Update the opcode descriptions of pickletools to use unsigned
 -  integers where appropriate.  Initial patch by Serhiy Storchaka.
 +- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when
 +  it has a value of None or the attribute doesn't exist.
  
 -IDLE
 -----
 +- Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
 +  error message has been removed.  Patch by Ram Rachum.
  
 -- Issue #17838: Allow sys.stdin to be reassigned.
 +- Issue #18080: When building a C extension module on OS X, if the compiler
 +  is overriden with the CC environment variable, use the new compiler as
 +  the default for linking if LDSHARED is not also overriden.  This restores
 +  Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.
  
 -- Issue #13495: Avoid loading the color delegator twice in IDLE.
 +- Issue #18113: Fixed a refcount leak in the curses.panel module's
 +  set_userptr() method.  Reported by Atsuo Ishimoto.
  
 -- Issue #17798: Allow IDLE to edit new files when specified on command line.
 +- Implement PEP 443 "Single-dispatch generic functions".
  
 -- Issue #14735: Update IDLE docs to omit "Control-z on Windows".
 +- Implement PEP 435 "Adding an Enum type to the Python standard library".
  
 -- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit().
 +Tests
 +-----
  
 -- Issue #17657: Show full Tk version in IDLE's about dialog.
 -  Patch by Todd Rovito.
++- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.
+ 
 -- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE.
 +- Issue #15415: Add new temp_dir() and change_cwd() context managers to
 +  test.support, and refactor temp_cwd() to use them.  Patch by Chris Jerdonek.
  
 -- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE.
 +- Issue #15494: test.support is now a package rather than a module (Initial
 +  patch by Indra Talip)
  
 -- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box.
 +- Issue #17944: test_zipfile now discoverable and uses subclassing to
 +  generate tests for different compression types.  Fixed a bug with skipping
 +  some tests due to use of exhausted iterators.
  
 -- Issue #17625: In IDLE, close the replace dialog after it is used.
 +- Issue #18266: test_largefile now works with unittest test discovery and
 +  supports running only selected tests.  Patch by Zachary Ware.
  
 -- Issue #14254: IDLE now handles readline correctly across shell restarts.
 +- Issue #17767: test_locale now works with unittest test discovery.
 +  Original patch by Zachary Ware.
  
 -- Issue #17614: IDLE no longer raises exception when quickly closing a file.
 +- Issue #18375: Assume --randomize when --randseed is used for running the
 +  testsuite.
  
 -- Issue #6698: IDLE now opens just an editor window when configured to do so.
 +- Issue #11185: Fix test_wait4 under AIX.  Patch by Sébastien Sablé.
  
 -- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer
 -  raises an exception.
 +- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds
 +  in ASN1_TIME fields.
  
 -- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo.
 +- Issue #18094: test_uuid no more reports skipped tests as passed.
  
 -Tests
 ------
 +- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't
 +  accidentally hang.
  
  - Issue #17833: Fix test_gdb failures seen on machines where debug symbols
    for glibc are available (seen on PPC64 Linux).