RFR: 8222467: ZGC: Log min/max/softmax capacity

[Per Liden]

Another off-line review with Stefan.

Updated webrev:
Diff: http://cr.openjdk.java.net/~pliden/8222467/webrev.1.diff
Full: http://cr.openjdk.java.net/~pliden/8222467/webrev.1

/Per

On 04/15/2019 09:04 AM, Per Liden wrote:
> With the newly added -XX:SoftMaxCapacity and the upcoming JEP 351 
> (Uncommit Unused Memory), it's interesting to know the heap 
> min/max/softmax capacity, which is currently not logged.
> 
> This patch adds that logging. It also moves and renames the string 
> format macros, so that we can reuse ZSIZE_FMT/ARGS for the new logging.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8222467
> Webrev: http://cr.openjdk.java.net/~pliden/8222467/webrev.0
> 
> /Per