bug#18955: Makefile:382: recipe for target 'src' failed

[Eli Zaretskii]

> Date: Sun, 09 Nov 2014 22:33:30 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 18955@debbugs.gnu.org
> 
> Once again, the MSYS build of Emacs works reasonably well, and the
> number of places where we need to use ugly kludges like
> unmsys--file-name is small.  You have just found one more, it's no big
> deal.

I've just made that rule use unmsys--file-name.

is there anything else that needs to be fixed in this bug report, or
can we close it?