remove duplicate token that emited by CGenerator.VisitVarDeclNode()
remove duplicate token that emited by SSACGenerator.VisitVarDeclNode()
refactoring in IsTopLevel
adding define node
Merge pull request #4 from imasahiro/RemoveDuplicateTokenInCGenerator

Remove duplicate token in c/ssac generator
Merge branch 'master' of github.com:libbun/libbun
renaming asm macro with define
renaming ZenGenerator with BunGenerator
introducing define
improve error report at jvm
Merge pull request #5 from sekiguchi-nagisa/master

improve error report at jvm
removed conficts in Merge conflict in lib/jvm/common.bun
importing updated common lisp from libzen