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-2.3.3/locale/weight.h.old	2003-06-11 14:52:12.000000000 -0700

 +++ glibc-2.3.3/locale/weight.h	2005-03-15 12:05:37.000000000 -0800

 @@ -18,8 +18,14 @@

     02111-1307 USA.  */

  /* Find index of weight.  */

 +#if __GNUC__ >= 4

 +auto inline int32_t

 +#else

  static inline int32_t

 +#endif

 +#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)

  __attribute ((always_inline))

 +#endif

  findidx (const unsigned char **cpp)

  {

    int_fast32_t i = table[*(*cpp)++];

 --- glibc-2.3.3/locale/weightwc.h.old	2003-06-13 13:44:58.000000000 -0700

 +++ glibc-2.3.3/locale/weightwc.h	2005-03-15 12:06:46.000000000 -0800

 @@ -18,8 +18,14 @@

     02111-1307 USA.  */

  /* Find index of weight.  */

 +#if __GNUC__ >= 4

 +auto inline int32_t

 +#else

  static inline int32_t

 +#endif

 +#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)

  __attribute ((always_inline))

 +#endif

  findidx (const wint_t **cpp)

  {

    int32_t i;