RFR JDK-8218702: [TESTBUG] com/sun/jdi/RepStep.java does not report debuggee errors

[Alex Menkov]

Hi all,

please review the fix for
https://bugs.openjdk.java.net/browse/JDK-8218702
webrev:
http://cr.openjdk.java.net/~amenkov/RepStep_redirect/webrev/

The fix adds events logging and debuggee stdout/stderr redirection (the 
test now logs crash in debuggee as described in JDK-8043571)

--alex