Upgrade to Python 3.9.1 [Windows]

http: //fusion/573206f1-ac79-4e82-b01b-dd1480498170
Change-Id: I13e6ff8bd8fe6073ebaadbf3f7c3f2967543d61b

Lib/distutils/sysconfig.py

diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
index b51629e..37feae5 100644
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -15,7 +15,6 @@
 import sys
 
 from .errors import DistutilsPlatformError
-from .util import get_platform, get_host_platform
 
 # These are needed in a couple of spots, so just compute them once.
 PREFIX = os.path.normpath(sys.prefix)
@@ -146,8 +145,15 @@
             prefix = plat_specific and EXEC_PREFIX or PREFIX
 
     if os.name == "posix":
-        libpython = os.path.join(prefix,
-                                 "lib", "python" + get_python_version())
+        if plat_specific or standard_lib:
+            # Platform-specific modules (any module from a non-pure-Python
+            # module distribution) or standard Python library modules.
+            libdir = sys.platlibdir
+        else:
+            # Pure Python
+            libdir = "lib"
+        libpython = os.path.join(prefix, libdir,
+                                 "python" + get_python_version())
         if standard_lib:
             return libpython
         else: