link-time optimization support

[Julian Waters]

I think it might be worthwhile to pursue later on, rather than now,
when everyone is just coming back from the new year's celebrations and
probably have a lot of other work to deal with. Just in case I
misunderstood you, by Project do you just mean setting some time aside
at a later date to work on all the issues, likely the build team's
responsibility, or do you mean an actual full fledged OpenJDK Project,
one that has to be proposed by someone on the discuss mailing list and
voted on, with a full blown Lead, Reviewers, Committers, and so on,
like, for instance, mobile or Leyden?

With all that aside, I find it a bit humorous that Windows/gcc, the
very OS that is often claimed to have broken LTO with gcc, seems to be
the only OS+compiler combination that has a working LTO HotSpot :P
(All GTests except the ones regarding debug symbols pass perfectly,
the debug symbol GTests don't pass because gcc does not have proper
support for codeview debugging information yet)

best regards,
Julian