07 august 98: ability to fill the selection with a string

06 august 98: forgot to mark all the things while doing them. Here is a list of
	what's been added:

	- make the display start at the current cursor position
	- go to a sector when in --sector mode
	- added a modeline
	- ability to open another file. Nice for copy&paste between files
	- you're no more forced to save the file per page. This means the
	cut&paste can now always be undone. It's much simplier that way (idea
	from Evin C Robertson, thanks)
	- the backspace acts as a small undo of the previous character. It's
	nice when typing (another idea from Evin C Robertson)
	- the modified-unmodified bytes are not shown in bold (eg: you replace
	'a' by 'a')

26 july 98: added a TODO file

26 july 98: added save copied region in a file

26 july 98: added search backward

25 july 98: added copy&paste functions

25 july 98: you can now select a part of the buffer

21 july 98: modified bytes are shown in bold.

21 july 98: corrected a bug, when you call function goto_char and the file is
	modified, you're now asked if you want to save (before that the changes
	were lost). You're only asked if the goto_char gets you to a different
	page of the file.

21 july 98: replace the searchInBuffer function by memmem. Then replaced memmem
	by mymemmem to counter the libc bug. All this permits a good speedup
	when searching.

21 july 98: removed the bug in the goto_char function. Now giving an empty
	string leaves the cursor unmoved. A small bug remains if you give an
	invalid hexadecimal string starting legally. The scanw(3ncurses)
	function returns a number corresponding at the legal beginning substring
	(eg: 1z2 becomes 1).

21 july 98: added an install entry in the Makefile (the one Robert Woodcock
	<rcw@oz.net> made for the debian package, thanks Robert Woodcock).

21 july 98: creation of the Changes file