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.

 # gcc-3.x doesn't like run-on strings

 # See also http://sources.redhat.com/ml/libc-alpha/2004-01/msg00032.html

 --- glibc-2.1.3/csu/Makefile.old	2004-03-04 12:18:52.000000000 -0800

 +++ glibc-2.1.3/csu/Makefile	2004-03-04 12:19:35.000000000 -0800

 @@ -188,8 +188,8 @@

  	 esac; \

  	 files="$(all-Banner-files)";				\

  	 if test -n "$$files"; then				\

 -	   echo "\"Available extensions:";			\

 -	   sed -e '/^#/d' -e 's/^[[:space:]]*/	/' $$files;	\

 -	   echo "\"";						\

 +	   echo -e "\"Available extensions:\\\\n\"";		\

 +  	   sed -e '/^#/d' -e 's/^[[:space:]]*/	/'		\

 +	       -e 's/^\(.*\)$$/\"\1\\n\"/' $$files;		\

  	 fi) > $@T

  	mv -f $@T $@