pack200 --repack not working in Java 1.7 or Java 1.8 on Mac OS X

[Stephen Bannasch]

Running pack200 --repack fails with a NullPointerException in Java 1.7 or Java 
1.8 Mac OS X 10.7.4

Exception in thread "main" java.lang.NullPointerException
        at com.sun.java.util.jar.pack.Driver.createTempFile(Driver.java:389)
        at com.sun.java.util.jar.pack.Driver.main(Driver.java:244)

more details: https://gist.github.com/3109057