Merge pull request #4 from sekiguchi-nagisa/jvm

JVM bugfix
fixed visitAny
add pegbytecode.def
add PegInstruction
add PegInstructionVisitor
add PegMethod
add PegInstructions
add PegInstructionGenerator
add JavaByteCodeGenerator
Merge pull request #5 from shun-honda/PegInstruction

Add PegInstruction
implement some method of JavaByteCodeGenerator
implement failure
add some helper method
clean up JvmByteCodeGenerator
implement not, optional
implement tagging, value, repition
implement connector