Introduce DISTUTILS_USE_SDK as a flag to determine whether the
SDK environment should be used. Fixes #1508010.
diff --git a/Misc/NEWS b/Misc/NEWS
index 46f6169..d01c1b1 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -39,6 +39,10 @@
 Library
 -------
 
+- Bug #1508010: msvccompiler now requires the DISTUTILS_USE_SDK 
+  environment variable to be set in order to the SDK environment
+  for finding the compiler, include files, etc.
+
 - Bug #1515998: Properly generate logical ids for files in bdist_msi.
 
 - warnings.py now ignores ImportWarning by default