Updated shelf

[Michael Ellerman]

Hiya,

This isn't as tested as I'd like, but I've gotta run, so here it is.

Code's been cleaned up, a bit.

UI is now much nicer. By default everything gets shelved now, you have to 
specify if you want to keep a patch. This seems to match better with my 
expectations.

You have options to:
 - show what hunks are selected
 - invert the current selection
 - jump to the end, ie. accept current status for all remaining hunks
 - restart the hunk loop (only from the end)
 - review before you finish

Also if you restart, the default option becomes the hunks current status. So 
if you realise you've selected a hunk you didn't want you can restart 'r', 
whack enter (ie. take default) for all the hunks up to the one you want, 
unselect it, then hit 'd' done to go to the end.

Unshelve still doesn't prompt, which I think it should.

I haven't done shelve --all yet, but you can get it with just by hitting 'd' 
then 'y'.

Let me know what you think.

cheers

ps. Now uses termios to do raw input (no need to hit enter), so won't work on 
Windows.

-- 
Michael Ellerman
IBM OzLabs

email: michael:ellerman.id.au
inmsg: mpe:jabber.org
wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
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