RFR(S): JDK-8074146 jdb has succeded to read an unreadable file

[Dmitry Samersoff]

Everybody,

Please review:

http://cr.openjdk.java.net/~dsamersoff/JDK-8074146/webrev.01/

 With current testing infrastructure it's hard to make file unreadable
on all platforms.

 From the other side codepath triggered by file open error is covered by
the case: "Read a directory - verify the read fails"

 So I decide to go with the surgery rather than a therapy and cut out
this test case entirely.

-Dmitry

-- 
Dmitry Samersoff
Oracle Java development team, Saint Petersburg, Russia
* I would love to change the world, but they won't give me the sources.