4.0 commit:
- PhpNetCore.Parser
- PhpNetCore.DuckTyping
- 4.0 version updates
- PHP.Core.Debug removed

git-tfs-id: [http://falcon:8080/tfs/Projects]$/PhalangerExtensions/Main/MySql;C4644
Merge remote-tracking branch 'refs/remotes/tfs/default'
MySql.Data update