fix class def
Merge pull request #29 from sekiguchi-nagisa/proc-error-log

move StreamSetter and StreamGetter into KonohaProcess.java
add comment
refactor NodeVisitor
fix indent
add Param field in NewNode
add log4j.jar
add log4j.properties
uncomment logging function
add deleteLogFile()
fix log4j.properties
add KonohaProcessMonitor
several fix