Add support for building PPL:
- PPL will be needed to correctly build gcc-4.4+ for the
GRAPHITE loop optimisation

-------- diffstat follows --------
/trunk/scripts/build/companion_libs/ppl.sh | 66 66 0 0 ++++++++++++++++++++++++++++++++++++
/trunk/scripts/build/companion_libs/gmp.sh | 24 19 5 0 ++++++++++---
/trunk/scripts/addToolVersion.sh | 3 2 1 0 +-
/trunk/scripts/crosstool-NG.sh.in | 3 3 0 0 ++
/trunk/steps.mk | 1 1 0 0 +
/trunk/config/companion_libs/ppl.in | 33 33 0 0 ++++++++++++++++++
/trunk/config/companion_libs.in | 22 19 3 0 ++++++++++--
7 files changed, 143 insertions(+), 9 deletions(-)

 # Compute powerpc-specific values

 CT_DoArchTupleValues () {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}"

     # The kernel ARCH:

     CT_KERNEL_ARCH=powerpc

     # Add spe in the tuplet if needed

     case "${CT_LIBC},${CT_ARCH_POWERPC_SPE}" in

         glibc,|eglibc,)   CT_TARGET_SYS=gnu;;

         glibc,y|eglibc,y) CT_TARGET_SYS=gnuspe;;

     esac

     # Add extra flags for SPE if needed

     if [ "${CT_ARCH_POWERPC_SPE}" = "y" ]; then

         CT_ARCH_TARGET_CFLAGS="-mabi=spe -mspe"

         CT_ARCH_CC_CORE_EXTRA_CONFIG="--enable-e500_double"

         CT_ARCH_CC_EXTRA_CONFIG="--enable-e500_double"

     fi

 }