bug#14822: ^M in info files

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Mon, 8 Jul 2013 18:35:54 +0200
> 
> Visiting most info topics (Ada Mode, Emacs Lisp Intro, CC Mode...) on
> Windows gives info buffers detected as Unix-style and with lines
> ending in ^M. Some other topics (Emacs, Emacs Lisp, Gnus) work as
> expected.
> 
> All info files (in both groups) have CRLF endings, were generated with
> the same tool and appear to be correct.
> 
> This is a Windows issue, though there hasn't been any Windows-specific
> coding-related change lately, so it's likely caused by some generic
> change.

This was not a Windows-specific issue: we were ignoring the
inhibit-null-byte-detection flag when decoding, because the machinery
that implements that flag has changed.

Should be fixed in trunk revision 113413.