RFR (L) 8220747:

[Jean Christophe Beyler]

Hi all,

I want to move the libHeapMonitorTest.c to C++ and here is the first "step"
towards that. There are two parts to this: move the file to C++ and move
some of the C-style to C++-style code.

But this webrev failed on solaris; Igor helped me figure it out and his
solution was to add the change to the JtregNativeHotspot.gmk for solstudio.
We are not sure this is the "right" solution to this and hence have added
both the serviceability and build lists to review both file changes and
figure out what is best :)

This does pass the submit-repo testing and the tests on my local dev
machine.

Bug: https://bugs.openjdk.java.net/browse/JDK-8220747
Webrev: http://cr.openjdk.java.net/~jcbeyler/8220747/webrev.02/

Thanks all for your help,
Jc