rename ssa transformer
fixed array boundary check @ ZArray.SetIndex, ZArray.GetIndex
added ZArray.Reserve(int)
rename ssa transformer
reimplement SSAConverter.
added SSAed CGenerator
Bug fixed at ZListNode.InsertListAt(int Index, ZNode Node)
modified to add item to the new list
fix infinite loop in ZASTTransformer
rename package name libbun.parser.ssa2 => libbun.parser.ssa
refactor SSACGenerator
added GetCurrentVariablesBefore(), GetCurrentVariablesAfter()
added _IsDigitOrLetter
Merge pull request #2 from imasahiro/UpdateSSA

Refactor ssa transformer (Part2)
added RegExp literal
Merge pull request #3 from imasahiro/AddRegExpLiteral

Add regular expression literal
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