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.

 --- glibc-2.2.2/nss/Makefile.orig	Tue May 20 16:02:47 2003

 +++ glibc-2.2.2/nss/Makefile	Tue May 20 16:03:52 2003

 @@ -41,6 +41,10 @@

  tests			= test-netdb

 +# Disable optimization when building nss to avoid crash described in

 +# http://gcc.gnu.org/ml/gcc-bugs/1998-06/msg00168.html

 +default_cflags := -g -O0

 +

  include ../Makeconfig

  ifeq (yes,$(build-static-nss))

 --- glibc-2.2.2/locale/Makefile.orig	Tue May 20 17:29:11 2003

 +++ glibc-2.2.2/locale/Makefile	Tue May 20 17:29:39 2003

 @@ -66,6 +66,10 @@

  GPERF = gperf

  GPERFFLAGS = -acCgopt -k1,2,5,9,$$ -L ANSI-C

 +# Disable optimization when building locale or nss to avoid crash described in

 +# http://gcc.gnu.org/ml/gcc-bugs/1998-06/msg00168.html

 +default_cflags := -g -O0

 +

  include ../Rules

  programs/%-kw.h: programs/%-kw.gperf