RFR (XS): 8066670 - PrintSharedArchiveAndExit does not exit the VM when the archive is invalid

[Ioi Lam]

Hi Folks,

Please review a small fix:

https://bugs.openjdk.java.net/browse/JDK-8066670
http://cr.openjdk.java.net/~iklam/8066670-PrintSharedArchiveAndExit/

Summary of fix:

Do not set UseSharedSpaces to falseif PrintSharedArchiveAndExit is enabled.

     After this fix, the JVM correctly exits when 
PrintSharedArchiveAndExit is enabled
     and an invalid archive is encountered.

     New test cases are in closed source code.

Tests:

     JPRT
     JTREG