[rfc] Clarify shared library warning

[Eli Zaretskii]

> Date: Wed, 11 Oct 2006 16:39:28 -0400
> From: Daniel Jacobowitz <drow@false.org>
> Cc: Joel Brobecker <brobecker@adacore.com>, Eli Zaretskii <eliz@gnu.org>,
> 	gdb-patches@sourceware.org
> 
> Would you all be happy with this compromise?
> 
> warning: .dynamic section for "/lib/libc.so.6" is not at the expected
> address (wrong shared library found?)

This doesn't mention the problem with the library version, which to me
is a very important clue.  I think version mismatch is a much more
likely problem than a library mismatch.