RFR(M) 8242165: SA sysprops support fails to dump all system properties

[Chris Plummer]

Hello,

Please help review the following:

https://bugs.openjdk.java.net/browse/JDK-8242165
http://cr.openjdk.java.net/~cjplummer/8242165/webrev.03

Please see the CR for an explanation of the bug and the fix. If you need 
some help with the SA code, let me know and I'll provide some details. 
It was pretty much all new to me, so I tried to put the needed details 
in the CR.

For the test, I compare the list of properties dumped using 3 different 
methods to make sure the same set is dumped for each:

1. jhsdb jinfo --sysprops
2. jinfo -sysprops
3. Simple app (LingeredAppSysProps) that calls 
System.getProperties().list(System.out)

The app output is considered the master list that is compared against 
the others, and I also make sure each list has the same number of 
properties.

thanks,

Chris