Allow using ash as the shell for ./configure and make.
After an idea by "Martin Guy" <martinwguy@yahoo.it>:
http://sourceware.org/ml/crossgcc/2008-08/msg00037.html

/trunk/scripts/crosstool.sh | 4 4 0 0 ++++
/trunk/config/global/build-behave.in | 14 14 0 0 ++++++++++++++
2 files changed, 18 insertions(+)

 # Compute IA-64-specific values

 CT_DoArchValues() {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}${target_endian_el}"

     # Override CFLAGS for endianness:

     case "${CT_ARCH_BE},${CT_ARCH_LE}" in

         y,) CT_ARCH_ENDIAN_CFLAG="-EB";;

         ,y) CT_ARCH_ENDIAN_CFLAG="-EL";;

     esac

 }