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://gcc.gnu.org/PR11608

 # Fixes following error when testing sh4 toolchain:

 # 

 # Testing debug/20020327-1.c, -gstabs1

 # ...

 # FAIL: gcc.dg/debug/20020327-1.c (test for excess errors)

 # Excess errors:

 # /tmp/cc8dFF7Y.s: Assembler messages:

 # /tmp/cc8dFF7Y.s:66: Error: symbol `Letext' is already defined

 Index: elf.h

 ===================================================================

 RCS file: /cvs/gcc/gcc/gcc/config/sh/elf.h,v

 retrieving revision 1.32

 diff -u -p -r1.32 elf.h

 --- gcc/gcc/config/sh/elf.h.old	27 Sep 2003 04:48:28 -0000	1.32

 +++ gcc/gcc/config/sh/elf.h	2 Jan 2004 07:23:23 -0000

 @@ -95,7 +95,7 @@ while (0)

  #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)			\

  do {									\

    text_section ();							\

 -  fprintf ((FILE), "\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO);	\

 +  asm_fprintf ((FILE), "\t.stabs \"\",%d,0,0,%LLetext\n%LLetext:\n", N_SO); \

  } while (0)

  #undef STARTFILE_SPEC