Rework the way EXPERIMENTAL architecture are marked as such, the same way kernels are handeld.
Fix marking EXPERIMENTAL kernel when using --prefix.

/trunk/kconfig/kconfig.mk | 44 22 22 0 ++++++++++++++++++++++----------------------
/trunk/arch/ia64/config.in | 1 1 0 0 +
/trunk/arch/sh/config.in | 1 1 0 0 +
3 files changed, 24 insertions(+), 22 deletions(-)

 # Compute IA-64-specific values

 CT_DoArchValues() {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}"

 }