support parsing "\\"
fixed CommentToken()
    parse error when multi-line comments appear in the single-line comment.
bug fixed : If the script has more than one new line, TokenContext produce wrong line numbers.
add NativeClassMethod test and swing sample
Merge pull request #9 from imasahiro/SupportNestedComment

Fix CommentToken for parsing comment when multi-line comments appear in the single-line comment
Merge pull request #10 from imasahiro/LineNumber

bug fixed : If the script has more than one new line, TokenContext produce wrong line numbers.
Merge pull request #11 from imasahiro/SupportEscapedBackQuoteInStringLiteral

support parsing "\\"
refactoring sample
adding UndefinedSymbol
adding _ rule for function names
adding static method
updating lib/java/math
updating lib/java/math
make them restricted.
Merge branch 'master' of github.com:GreenTeaScript/GreenTeaScript
make them restricted.
fix LibGreenTea.ts
fix LibGreenTea.ts
refactoring JavaByteCodeGenerator
stop compile at VisitErroNode