branch bytecode verification

[Tony Kimball]

Starting today, I'm getting stuff like this on 3.0.1 branch, from
javac compiled bytecode:

com/crionics/util/FastHashMapKeyless.java: In class `com.crionics.util.FastHashMapKeyless':

com/crionics/util/FastHashMapKeyless.java: In method `com.crionics.util.FastHashMapKeyless.<clinit>()':

com/crionics/util/FastHashMapKeyless.java:81: verification error at PC=17

com/crionics/util/FastHashMapKeyless.java:81: invalid argument type

com/crionics/util/FastHashMapKeyless.java:81: expected type 'long' but stack contains 'void'