Fix warning about setting --host and not --build.

Upgrade scripts/tarball.sh and scripts/saveSample.sh to use the new logging facility.

Move the config script for the build dir to the source dir.
That will be useful when we have the restart functionality.

Fix gdb to install in CT_PREFIX_DIR rather than CT_INSTALL_DIR.
One day, I swear, I will implement the install directory option. But later.

Ah! I finally have a progress bar that doesn't stall the build!
- pipe size in Linux is only 8*512=4096 bytes
- pipe size is not setable
- when the feeding process spits out data faster than the eating
process can read it, then the feeding process stalls after 4KiB
of data sent to the pipe
- for us, the progress bar would spawn a sub-shell every line,
and the sub-shell would in turn spawn a 'date' command.
Which was sloooww as hell, and would cause some kind of a
starvation: the pipe was full most of the time, and the
feeding process was stalled all this time.

Now, we use internal variables and a little hack based onan offset
to determine the elapsed time. Much faster this way, but still
CPU-intensive.

Forgot to svn add...

Add gcc-4.2.0 (EXPERIMENTAL) and some patches vampirised from buildroot (302 rediffed against 4.2.0).

Fix adding versions for the core C compiler.

Add uClibc-0.9.29:
- associated patch set
- update the munging function to accomodate the new config variables
libfloat version was missing from the previous commit... :-(
Better handle the case where the sample directory already exist but isn't under revision control, and in case the destination file doesn't exist in the sample directory.

Correctly handle the libfloat case: download, extract and patch sub-actions.
Small improvement in messages in scipts/functions when retrieving a file.