Hello, World! / 64-bit ARMv8

[Andrew Haley]

Having successfully run "Hello, World!" on our 64-bit ARM simulation
just after Java One, we've fixed a few bugs and I'm moving on to some
more difficult tests.  This is a great demonstration of how far we've
come:

happy:~ $ /home/aph/aarch64/jdk8/build/linux-amd64-debug/j2sdk-image/bin/javac Hello.java
happy:~ $ /home/aph/aarch64/jdk8/build/linux-amd64-debug/j2sdk-image/bin/java Hello
Hello, World!

I think this is turning into something real.  TCK testing next.

Andrew.