RFR: 8221535: add steal tick related information to hs_error file [linux]

[Baesken, Matthias]

Hello, please review  the  following change .

Recent Linux kernels provide in the /proc filesystem   so called "steal" information, see the the proc man page :

  ..
"there is an eighth column, steal - stolen time, which is the time spent in other operating systems when running in a virtualized environment"

The info was useful  in our  internal VM,  when looking into performance issues  (especially in virtualized environments), so it should be added to the hs_err file .

Bug/webrev :

https://bugs.openjdk.java.net/browse/JDK-8221535

http://cr.openjdk.java.net/~mbaesken/webrevs/8221535.0/


Best Regards, Matthias