RFR(XS): x86: 8171974: Fix for R10 Register clobbering with usage of ExternalAddress

[Rickard Bäckman]

macroAssembler_x86.cpp & macroAssembler_x86.hpp
 Please don't use scr as a variable name, scratch is probably better if
 that is what it is? scr and src are too similar.

/R

On 12/23, Deshpande, Vivek R wrote:
> Hi
> 
> I have bug fix for R10 Register clobbering with usage of ExternalAddress in the instructions.
> Webrev for the fix:
> http://cr.openjdk.java.net/~vdeshpande/8171974/webrev.00/
> I have also updated the JBS entry.
> https://bugs.openjdk.java.net/browse/JDK-8171974
> Would you please review and sponsor it.
> 
> Regards,
> Vivek
>