kernel32: Implement GetProductInfo on top of ntdll stub.

dlls/kernel32/kernel32.spec

@@ -599,6 +599,7 @@
 @ stdcall GetProcessTimes(long ptr ptr ptr ptr)
 @ stdcall GetProcessVersion(long)
 @ stdcall GetProcessWorkingSetSize(long ptr ptr)
+@ stdcall GetProductInfo(long long long long ptr)
 @ stub GetProductName
 @ stdcall GetProfileIntA(str str long)
 @ stdcall GetProfileIntW(wstr wstr long)

dlls/kernel32/version.c

@@ -186,3 +186,18 @@ DWORD WINAPI SetTermsrvAppInstallMode(BOOL bInstallMode)
     FIXME("(%d): stub\n", bInstallMode);
     return 0;
 }
+
+/***********************************************************************
+ *           GetProductInfo       (KERNEL32.@)
+ *
+ * Gives info about the current Windows product type, in a format compatible
+ * with the given Windows version
+ *
+ * Returns TRUE if the input is valid, FALSE otherwise
+ */
+BOOL WINAPI GetProductInfo(DWORD dwOSMajorVersion, DWORD dwOSMinorVersion, DWORD dwSpMajorVersion,
+                           DWORD dwSpMinorVersion, PDWORD pdwReturnedProductType)
+{
+    return RtlGetProductInfo(dwOSMajorVersion, dwOSMinorVersion,
+                             dwSpMajorVersion, dwSpMinorVersion, pdwReturnedProductType);
+}