Patches for glibc-2.5, courtesy of "Robert P. J. Day" <rpjday@mindspring.com>

Make the debug config menu a generated file.
Add a uClibc-0.9.29 patch directory with one patch (from me!).
Update the armeb-unknown-linux-uclibc sample to uClibc-0.9.29.
Some eyecandy in the gdb build process.

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.