fix an error ( Error: Unable to access jarfile ./lib/ethereumj-0.7.9.jar )

the file that was trying to load is not available - has some timestampish thing now at the end ethereumj-0.7.9.20141123.2140.jar 

the bat might have the same problem - but I have no environment to test this change.

On linux I am one step further now - now I have to find a way around [net]  Exception: Connection refused