Generate the kernel config choice, rather than having it hard-coded:
- change the menu label from 'Target OS' to 'Operating System',
- bare-metal is a kind of kernel (OS), rename to 'bare-metal' from 'none',
- update the kconfig.mk to generate the kernel choice entries,
- update glibc&eglibc kernel version option accordingly.
Update the debug & tools confiog file generation to match with arch & kernel.
Print terse command lines when building in kconfig/ (a-la Linux kernel).
Fix the makefile rules in kconfig/kconfig.mk to be /simple/ rules.

/trunk/kconfig/kconfig.mk | 117 81 36 0 +++++++++++++++++++++----------
/trunk/config/kernel/linux.in | 4 4 0 0 +
/trunk/config/kernel/bare-metal.experimental.in | 15 15 0 0 ++++
/trunk/config/kernel.in | 33 5 28 0 +--------
/trunk/config/libc/glibc-eglibc-common.in | 4 2 2 0
5 files changed, 107 insertions(+), 66 deletions(-)

 # Kernel options

 menu "Operating System"

 config KERNEL

     string

 config KERNEL_VERSION

     string

 choice

     bool

     prompt "Target OS"

 source config.gen/kernel.in

 endchoice

 endmenu