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.

 Status: committed upstream after 6.3.  Fixes some terminal mangling in

 gdbtui.

 2004-12-04  Daniel Jacobowitz  <dan@debian.org>

 	PR tui/1703

 	* linux-nat.c (linux_tracefork_child): Use _exit instead of exit.

 	Suggested by Joshua Neuheisel.

 Index: gdb-6.3/gdb/linux-nat.c

 ===================================================================

 --- gdb-6.3.orig/gdb/linux-nat.c	2004-12-08 18:22:04.996973094 -0500

 +++ gdb-6.3/gdb/linux-nat.c	2004-12-08 18:22:20.386956067 -0500

 @@ -147,7 +147,7 @@ linux_tracefork_child (void)

    ptrace (PTRACE_TRACEME, 0, 0, 0);

    kill (getpid (), SIGSTOP);

    fork ();

 -  exit (0);

 +  _exit (0);

  }

  /* Wrapper function for waitpid which handles EINTR.  */