Debug facilities:
- add a framework to easily add new ones
- add gdb as a first debug facility
- add patches for gdb
After the kernel checked its installed headers, clean up the mess of .checked.* files.
Reorder scripts/crosstool.sh:
- dump the configuration early
- renice early
- get info about build system early, when setting up the environment
- when in cross or native, the host tools are those of the build system, and only in this case
- elapsed time calculations moved to scripts/functions
Remove handling of the color: it's gone once and for all.
Update tools/addToolVersion.sh:
- handle debug facilities
- commonalise some code
- remove dead tools (cygwin, tcc)
Point to my address for bug reports.

 --- glibc-2.3.2/sysdeps/gnu/errlist.awk.old	Tue May 27 18:10:37 2003

 +++ glibc-2.3.2/sysdeps/gnu/errlist.awk	Tue May 27 18:10:47 2003

 @@ -39,7 +39,7 @@

      print "/* This file is generated from errno.texi by errlist.awk.  */"

      print "";

 -    print "#include <errno.h>";

 +    print "#include <stdlib/errno.h>";

      print "#include <libintl.h>";

      print "";

      print "#ifndef ERR_REMAP";