[proposal/testsuite] require build == host

[Eli Zaretskii]

> Date: Sat, 24 Jul 2004 20:03:44 -0400 (EDT)
> From: mec.gnu@mindspring.com (Michael Chastain)
> 
> 2004-07-24  Michael Chastain  <mec.gnu@mindspring.com>
> 
> 	* gdbint.texinfo (Testsuite): Document that build and host
> 	must be the same machine.

I don't have an opinion about the issue, but the patch is okay with
me, provided that we agree to the requirement itself.

Perhaps this paragraph should be indexed, though: it sounds important
enough to warrant that.