Huge fixes to glibc build, so that we can build at least (and at last):
- use ports addon even when installing headers,
- use optimisation (-O) when installing headers, to avoid unnecessary warnings (thanks Robert P. J. DAY for pointing this out!),
- lowest kernel version to use is only X.Y.Z, not X.Y.Z.T,
- a bit of preparations for NPTL (RSN I hope),
- fix fixing the linker scripts (changing the backup file is kind of useless and stupid);

Shut uClibc finish step: there really is nothing to do;

Add a patch for glibc-2.3.6 weak aliases handling on some archs (ARM and ALPHA at least);

Did not catch the make errors: fixed the pattern matching in scripts/functions;

Introduce a new log level, ALL:
- send components' build messages there,
- DEBUG log level is destined only for crosstool-NG debug messages,
- migrate sub-actions to use appropriate log levels;

Update the armeb-unknown-linux-gnu sample:
- it builds!
- uses gcc-4.0.4 and glibc-2.3.6,
- updated to latest config options set.

 See http://sources.redhat.com/ml/binutils/2004-06/msg00114.html

 --- src/bfd/elflink.c.org	2004-07-05 09:11:42.920597000 -0400

 +++ src/bfd/elflink.c	2004-07-05 09:12:59.240847000 -0400

 @@ -2700,7 +2700,7 @@

      return vdiff > 0 ? 1 : -1;

    else

      {

 -      long sdiff = h1->root.u.def.section - h2->root.u.def.section;

 +      long sdiff = h1->root.u.def.section->id - h2->root.u.def.section->id;

        if (sdiff != 0)

  	return sdiff > 0 ? 1 : -1;

      }

 @@ -3954,7 +3954,7 @@

  		i = idx + 1;

  	      else

  		{

 -		  long sdiff = slook - h->root.u.def.section;

 +		  long sdiff = slook->id - h->root.u.def.section->id;

  		  if (sdiff < 0)

  		    j = idx;

  		  else if (sdiff > 0)