OSX port

[Stephen Bannasch]

Hi Henri

By setting ALT_BOOTDIR and ALT_JDK_IMPORT_PATH to use a recent Java 1.8 build (from last week, 2012_07_07) my mlvm now compiles 
and runs fine on 10.6.8

Updated script here: https://gist.github.com/243072

Am running following jtreg tests:

   jdk/test/java/lang/invoke/
   jdk/test/java/dyn/CoroutineTest.java

Also testing GUI (is X11 linked in properly) by running /Developer/Extras/Java/JFC/SwingSet2/SwingSet2.jar

latest build uploaded here:
http://www.concord.org/~sbannasch/mlvm/java-1.8.0-internal-mlvm-2012_07_11.tar.gz