#13 Doesn't work with Java 8

[peter_hansson]

I've been using autojar for quite some time to slim fastutil. It has always worked fine until fastutil upgraded to Java 8.

Now, I get the following error:

FATAL:  org.apache.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 18

As far as I understand the version of BCEL used by autojar needs to be updated to v6.0 and this will hopefully fix the problem.