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(+)

 --- gcc-4.0.0/boehm-gc/include/gc.h-orig	2005-04-28 22:28:57.000000000 -0500

 +++ gcc-4.0.0/boehm-gc/include/gc.h	2005-04-28 22:30:38.000000000 -0500

 @@ -500,7 +500,7 @@

  #ifdef __linux__

  # include <features.h>

  # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2) \

 -     && !defined(__ia64__)

 +     && !defined(__ia64__) && !defined(__UCLIBC__)

  #   ifndef GC_HAVE_BUILTIN_BACKTRACE

  #     define GC_HAVE_BUILTIN_BACKTRACE

  #   endif