* Rewrote the file browser, help window, and delete windows

* Split browser.c into delete.c and help.c
* Added "reference to parent directory"-hack
* File browser doesn't use the ncurses menu lib anymore
* Fixed bug #1758403: large directories work fine now
* Fixed bug with wide characters in the browser
* Performance improvements when browsing large directories
* Required (instead of recommended) gettimeofday()


git-svn-id: svn://blicky.net/ncdu/trunk@6 ce56bc8d-f834-0410-b703-f827bd498a76