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-2.2.5/malloc/tst-calloc.c.old	Sun Aug  3 16:17:58 2003

 +++ glibc-2.2.5/malloc/tst-calloc.c	Sun Aug  3 16:20:01 2003

 @@ -24,9 +24,8 @@

  #include <stdio.h>

 -/* Number of samples per size.  */

 -#define N 50000

 -

 +/* Number of samples per size.  This is also the maximum memory consumption in kilobytes. */

 +#define N 8000

  static void

  fixed_test (int size)