hashing wakebox result files

[mmjconolly]

I'm not sure if it's intentional or not but I found it odd, I occasionally see this in the progress bar:

$ wake mycommand
[stderr] <hash> 
[stderr] hash: .build/result-70280.json                     
[stderr] <hash>  
[stderr] hash: .build/result-70255.json
[stderr] hash: .build/result-70155.json     
[stderr] hash: .build/result-70170.json    
[stderr] hash: .build/result-70125.json   
[stderr] hash: .build/result-70240.json    
[stderr] <hash> 
[stderr] hash: .build/result-70150.json         

(this is with local caching turned on, didn't try to repro without)

[JakeSiFive]

Yeah thats a bug