RFR(XXS): 8165014: Unaligned unsafe access should throw InternalError on Solaris

[Doerr, Martin]

Hi,

as discussed in http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2016-August/020888.html,
the signal handler on Solaris SPARC should throw a java.lang.InternalError when Unsafe accesses unaligned addresses.
This is currently broken because the signal handler only accepts BUS_OBJERR which is not sufficient.

Proposed fix:
http://cr.openjdk.java.net/~mdoerr/8165014_sparcSIGBUS/webrev.00/

Please review. I will also need a sponsor.

Best regards,
Martin