Restructure SConstruct to reduce the likelihood
of errors and to provide additional feedback.
Features:
- Better help. You can now run 'scons -h' to
  get a listing of all build options.
- Local configuration. Build variables are picked up
  in a local .config file, if present.
- Added --dump-config option to display the build
  configuration.
- Use scons substitution system to avoid having to do
  parameter substitutions manually.
- Some assorted fixes.

32bit Intel systems don't actually report 'x86' as
their architecture, rather, they are i?86 systems.
Provide a lookup table to map these codes to the
'x86' name that is used in the SConstruct file.

This is liblitmus, not ft_tools.

This is the beginning of the LITMUS^RT testsuite.
The main design goals are flexibility and ease of test writing.

To create a new test, simply write a test case in any C file in the
tests/ subdirectory. The buildsystem will find the test and hook it
up with the testrunner.

Have a look at tests/fdso.c and include/tests.h to get an idea for what
tests look like.

Tests can be executed with the 'runtests' tool. Each testcase is executed
in a separate process in order to ensure that tests do not influence
each other.

 - add all-32, all-64 targets in Makefile (cross compilation for x86)
 - update SConstruct kernel search path
 - add architecture dependent include dirs in search path

People got confused how to use them.
They were never meant to be useful to outside developers.
So, just get rid of them now.

this finally appears to work reasonably on Flare