RFR: 8026848: -XX:+G1SummarizeRSetStats can result in wrong exit code and crash

[Stefan Johansson]

Hi,

Please review this fix for:
https://bugs.openjdk.java.net/browse/JDK-8026848

Webrev:
http://cr.openjdk.java.net/~sjohanss/8026848/webrev.00/

Summary:
Some of the log-messages in g1RemSetSummary.cpp used %d and %zu to print 
size_t values. This might lead to the unexpected behavior described in 
the bug report. This patch changes those messages to use SIZE_FORMAT and 
SIZE_FORMAT_W instead.

Testing:
I was able to reproduce the crash on my laptop with a clean build, after 
applying my change the problem goes away. Also ran the tests mentioned 
in the bug-report through JPRT and results were clean.

Thanks,
StefanJ