RFR(S) 8178731: compiler/ciReplay/SABase.java does not compile

[Ekaterina Pavlova]

Hi everyone,

Please review this small change that fixes hotspot/test/compiler/ciReplay/SABase.java
This file used ProcessHandle.getPid() which was recently renamed in ProcessHandle.pid()
as part of JDK-8178347.
Also fixed test/serviceability/sa/sadebugd/SADebugDTest.java which had the same issue.

   bug: https://bugs.openjdk.java.net/browse/JDK-8178731
webrev: http://cr.openjdk.java.net/~iignatyev/epavlova/8178731/webrev.00/

Tested by running jprt.

thanks,
-katya

p.s.
 Igor Ignatyev volunteered to sponsor this change.