Forum-7191: When NSvn.Client initialization fails, disable project browser overlays.
Exception handler in ParserService.ParserFile: show the name of the file that caused the exception.
AsynchronousAdvancedHighlighter: do not try to highlight deleted lines. This should fix the bug reported in forum-7175.
git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2793 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61