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.

 ../sysdeps/generic/wordexp.c: In function 'exec_comm':

 ../sysdeps/generic/wordexp.c:815: sorry, unimplemented: inlining failed in call to 'exec_comm_child': function body not available

 ../sysdeps/generic/wordexp.c:900: sorry, unimplemented: called from here

 make[2]: *** [/home/dank/queue/jobdir.fast2/crosstool-dev/build/i686-unknown-linux-gnu/gcc-4.0-20050305-glibc-2.3-20050307/build-glibc/posix/wordexp.o] Error

 I had to add the keyword 'inline' to get it to compile:

 --- glibc-2.3-20050307/sysdeps/generic/wordexp.c.old	2005-03-12 08:54:15.709253928 -0800

 +++ glibc-2.3-20050307/sysdeps/generic/wordexp.c	2005-03-12 08:54:51.242852000 -0800

 @@ -809,7 +809,7 @@

  }

  /* Function called by child process in exec_comm() */

 -static void

 +static inline void

  internal_function __attribute__ ((always_inline))

  exec_comm_child (char *comm, int *fildes, int showerr, int noexec)

  {

 Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>