Add SPE extensions support for PowerPC (after a work by Thomas JOURDAN).
Add a PowerPC sample that supports SPE extensions.

/trunk/arch/powerpc/functions | 13 13 0 0 +
/trunk/arch/powerpc/config.in | 8 8 0 0 +
/trunk/patches/gcc/4.3.1/340-make-mno-spe-work-as-expected.patch | 90 90 0 0 ++++
/trunk/samples/powerpc-unknown-linux-gnuspe/crosstool.config | 309 309 0 0 ++++++++++++++
4 files changed, 420 insertions(+)

# powerpc specific configuration file

config ARCH_powerpc

    select ARCH_SUPPORT_ABI

    select ARCH_SUPPORT_CPU

    select ARCH_SUPPORT_TUNE

    help

      The PowerPC architecture, as defined by:

        http://www.ibm.com/developerworks/eserver/articles/archguide.html

config ARCH_POWERPC_SPE

    bool

    prompt "Enable SPE support (EXPERIMENTAL)"

    depends on EXPERIMENTAL

    default n

    help

      Add support for the Signal Processing Engine.