guardWithTest revisited

[Charles Oliver Nutter]

Ok, John got fixes in to get gWT working last night, so I gave my code 
another try:

http://gist.github.com/118504

But I'm getting this, so I'm not wiring something correctly:

CallSite.java:166:in `checkTarget': java.dyn.WrongMethodTypeException: 
Bound[invoke_L5(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object)java.lang.Object]
	from CallSite.java:159:in `setTarget'
	from InvokeDynamicSupport.java:66:in `fallback'
	from -e:1:in `__file__'

I'm investigating, but wanted to toss it out there in case someone sees 
something obvious (or runs into the same thing).

- Charlie