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.

 --- /dev/null	Sat Dec 14 13:56:51 2002

 +++ gcc-3.3.1/gcc/testsuite/gcc.dg/pr11864-1.c	Sun Sep 14 14:32:24 2003

 @@ -0,0 +1,42 @@

 +/* PR optimization/11864

 + * Reporter: Kazumoto Kojima <kkojima@gcc.gnu.org>

 + * Summary: [3.3/3.4 regression] miscompiles zero extension and test

 + * Description:

 + * gcc-3.3/3.4 -O2 for sh target may miscompile the combination of zero extension

 + * and test if it's zero.

 + *

 + * Testcase tweaked by dank@kegel.com.  Not marked as xfail because it's a regression.

 + */

 +/* { dg-do run } */

 +/* { dg-options "-O2" } */

 +

 +extern void abort(void);

 +

 +int val = 0xff00;

 +

 +int f(void)

 +{

 +	return val;

 +}

 +

 +unsigned char a[1];

 +

 +void foo(void)

 +{

 +	a[0] = f() & 255;

 +

 +	if (!a[0])

 +		a[0] = f() & 255;

 +

 +	if (!a[0])

 +		a[0] = 1 + (f() & 127);

 +}

 +

 +int main(int argc, char **argv)

 +{

 +	foo();

 +	if (!a[0])

 +		abort();

 +

 +	return 0;

 +}