Enhance setting the minimum kernel version glibc will run against.
Ideally, eglibc should also benefit for that, but the current code does not set it.

/trunk/scripts/build/libc/glibc.sh | 38 33 5 0 +++++++++++++++---
/trunk/config/libc/glibc.in | 4 2 2 0 +-
/trunk/config/libc/uClibc.in | 2 2 0 0 +
/trunk/config/libc/eglibc.in | 4 2 2 0 +-
/trunk/config/libc/glibc-eglibc-common.in | 80 68 12 0 +++++++++++++++++++++++++++++++------
/trunk/config/libc.in | 69 38 31 0 ++++++++++++++++++--------------
6 files changed, 145 insertions(+), 52 deletions(-)

 # Kernel options

 config KERNEL

     string

     default "none"  if BARE_METAL

     default "linux" if KERNEL_LINUX

 if ! BARE_METAL

 menu "Kernel"

 choice

     bool

     prompt "Target OS"

     default KERNEL_LINUX

 config KERNEL_LINUX

     bool

     prompt "linux"

     help

       Build a toolchain targeting systems running Linux as a kernel.

 endchoice

 config KERNEL_VERSION

     string

 if KERNEL_LINUX

 source config/kernel/linux.in

 endif

 endmenu

 endif # ! BARE_METAL