(11) RFR (S) JDK-8196884: VS2017 Multiple Type Cast Conversion Compilation Errors

[coleen.phillimore at oracle.com]

These changes look good.  Agree that hopefully these can be replaced 
with some BAD_PTR in the future.
Coleen

On 2/16/18 3:37 PM, Lois Foltan wrote:
> Please review this fix for multiple type cast conversion compilation 
> errors.  This fix includes a change to correctly type the symbolic 
> constants badAddressVal and badOopVal in globalDefinitions.hpp and 
> adjust numerous type cast conversions for the constant 0xdeadbeef.
>
> open webrev at http://cr.openjdk.java.net/~lfoltan/bug_jdk8196884/webrev/
> bug link https://bugs.openjdk.java.net/browse/JDK-8196884
>
> Suggestions in the bug to remove the questionable remaining use of 
> badOopVal as well as introduce a BAD_PTR macro definition for 
> 0xdeadbeef have been filed as RFEs:
> - Removal of BadOopVal https://bugs.openjdk.java.net/browse/JDK-8198308
> - Introduce BAD_PTR https://bugs.openjdk.java.net/browse/JDK-8198309
>
> Testing in progress (hs-tier1-3, jdk-tier1-3)
>
> Thanks,
> Lois