adding DyGetter, DySetter
Merge branch 'master' of github.com:GreenTeaScript/GreenTeaScript
adding DyGetter DySetter
bugs fixed at native super class
bugs fixed warning of returning
adding termination of block in ThrowNode
adding UnboxType flags
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.
adding dynamic setter for experimenal purpose
unimportant commit
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
make them restricted.