PR 38867: unexpanded prefix in LIBGCJ_PREFIX

[Andrew Haley]

Ralf Wildenhues wrote:
> When the user does not specify --prefix to configure, LIBGCJ_PREFIX
> ends up containing the string "NONE", bogusly.  See the PR.  The patch
> below fixes that, and a couple of other instances that might get that
> string otherwise.
> 
> I don't see what breakage the NONE causes in the end for the user, so
> I'm unsure about proper testing.  I remade configure-target-libjava,
> with and without --prefix passed to toplevel configure, and checked the
> result.  What other tests should I be doing?  Otherwise, OK for trunk?
> 
> Thanks,
> Ralf
> 
> Work with defaulted $prefix (NONE) in libjava.
> 
> libjava/ChangeLog:
> 2009-11-01  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
> 
> 	PR bootstrap/38867
> 	* configure.ac (expanded_prefix): New variable, set to the
> 	default prefix if none was passed on the command line.
> 	* configure: Regenerate.

That looks OK.

Thanks,
Andrew.