Add test code to generate test_genesis_json file and text file with associated delegate key pairs. Added scripts (client0.bat, client1.bat, etc) to launch clients that can be used to create regression tests.
Allow multiple --input-log options to be passed to client to enable use of "test harness" scripts for regression tests (for example, to define a script that imports a delegate key and enables block production for multiple tests).
Move tie between input stream and output stream into the cli from the client code.