* View Large File Improved

An Emacs mode that allows viewing files in chunks.  This is a fork
that builds on the GNU ELPA vlf.el.  It adds the following
improvements:

- by chunk search
- chunk editing
- options to jump to end or beginning of file
- ability to jump/insert given number of batches at once
- ability to view newly added content if the file has grown meanwhile
- vlfi is added as an option when opening large files