Patch #1495999: Part two of Windows CE changes.

- update header checks, using autoconf
- provide dummies for getenv, environ, and GetVersion
- adjust MSC_VER check in socketmodule.c

Python/thread_nt.h

@@ -5,7 +5,9 @@
 
 #include <windows.h>
 #include <limits.h>
+#ifdef HAVE_PROCESS_H
 #include <process.h>
+#endif
 
 typedef struct NRMUTEX {
 	LONG   owned ;