[MERGE] integrated EOL conversion support

[Alexander Belchenko]

Ian Clatworthy пишет:
> End Of Line conversion needs to be provided out-of-the-box.
> This takes the code from the experimental bzr-eol plugin,
> adds more tests and fixes a bug those tests triggered.

Hooray!

> I'd greatly appreciate it if someone could apply this patch
> on Windows, run "./bzr selftest test_eol" and confirm all
> the tests pass there.

I can't resist! I'll post result after testing.

> It will be a happy day when this lands in bzr.dev!

Indeed :-D

> 
> Ian C.
>