bug#16717: Dumping: Can't update subspace record

[Paul Eggert]

Glenn Morris wrote:
> Because I totally agree [with requiring GNU make]

I'd also prefer requiring GNU make after the freeze is over.  GCC has 
required this since GCC 3.4 (April 2004), and it seems to perk along 
quite nicely.  GCC requires GNU make 3.80 (October 2002) or later; these 
days I think it'd be OK for Emacs to bump that to GNU make 3.81 (April 
2006) or later.

> I think it would be better to first figure out exactly what HP make did
> not like in the original version.

Trying to nail down exactly what an old proprietary 'make' dislikes is 
often more trouble than it's worth.  I've had experiences with them not 
liking command lines of exactly 1023 bytes, that sort of thing.

> Fails when the installation directory contains spaces.

Sorry about that; fixed in trunk bzr 16717.  There are other reasons 
installation fails when the destination directory name contains spaces, 
at least for me; I'll try to look into that.