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.

 --- gdb-6.1.1-dist/readline/configure	2003-05-27 18:29:47.000000000 -0500

 +++ gdb-6.1.1/readline/configure	2004-08-09 14:20:23.000000000 -0500

 @@ -6249,7 +6249,12 @@

  echo "$as_me:$LINENO: checking for mbstate_t" >&5

 +echo $ECHO_N "bash_cv_have_mbstate_t=$bash_cv_have_mbstate_t" >&6

  echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6

 +if test "${bash_cv_have_mbstate_t+set}" != set; then

 +  bash_cv_have_mbstate_t=yes

 +  echo $ECHO_N "WARNING!! forcing to yes!!! $ECHO_C" >&6

 +fi

  if test "${bash_cv_have_mbstate_t+set}" = set; then

    echo $ECHO_N "(cached) $ECHO_C" >&6

  else