Push the calculation of the tuple's kernel part down to kernel's build scripts:

- update the kernel script's API with the function CT_DiKernelTupleValues
- update doc accordingly (also with the architecture change, missing in the previous commit)
- small clean-up in the main script, remove useless test

 /trunk/scripts/build/kernel/bare-metal.sh |    5     5     0     0 +++++
 /trunk/scripts/build/kernel/linux.sh      |    5     5     0     0 +++++
 /trunk/scripts/crosstool.sh               |   31    13    18     0 +++++++++++++------------------
 /trunk/scripts/functions                  |   15     8     7     0 ++++++++-------
 /trunk/docs/overview.txt                  |   13     9     4     0 +++++++++----
 5 files changed, 40 insertions(+), 29 deletions(-)

2 files changed, 10 insertions, 0 deletions

diff --git a/scripts/build/kernel/bare-metal.sh b/scripts/build/kernel/bare-metal.sh
index 2dfda41d..be83d169 100644
--- a/scripts/build/kernel/bare-metal.sh
+++ b/scripts/build/kernel/bare-metal.sh
@@ -2,6 +2,11 @@
 # Copyright 2008 Yann E. MORIN
 # Licensed under the GPL v2. See COPYING in the root of this package
 
+CT_DoKernelTupleValues() {
+    # For bare-metal, there is no kernel part in the tuple
+    CT_TARGET_KERNEL=
+}
+
 do_print_filename() {
     :
 }
diff --git a/scripts/build/kernel/linux.sh b/scripts/build/kernel/linux.sh
index 27749e25..2313c8b8 100644
--- a/scripts/build/kernel/linux.sh
+++ b/scripts/build/kernel/linux.sh
@@ -2,6 +2,11 @@
 # Copyright 2007 Yann E. MORIN
 # Licensed under the GPL v2. See COPYING in the root of this package
 
+CT_DoKernelTupleValues() {
+    # Nothing to do, keep the default value
+    :
+}
+
 do_print_filename() {
     echo "linux-${CT_KERNEL_VERSION}"
 }