1.QParserGenerator支持[]开头的产生式
2.增强QParserGenerator的错误提示
3.QLanguage BNF

git-svn-id: https://qlanguage.googlecode.com/svn/trunk@189 6d982bb3-a5a7-393d-ffc5-582415be9c85
修改BNF

git-svn-id: https://qlanguage.googlecode.com/svn/trunk@190 6d982bb3-a5a7-393d-ffc5-582415be9c85