configure: Add checks for sparc64 and powerpc64

[André Hentschel]

this makes Austins WIN64 patch (d67275fed84e74072d202fc98c205f40c6d18b63) more likely working (e.g. sparc64 compiler only defines __arch_64__)
---
 configure.ac |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index dda1684..d6f5e6a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2314,7 +2314,9 @@ dnl *** check for the need to define platform-specific symbols
 case $host_cpu in
   *i[[3456789]]86*) WINE_CHECK_DEFINE([__i386__]) ;;
   *x86_64*)         WINE_CHECK_DEFINE([__x86_64__]) ;;
+  *sparc64*)        WINE_CHECK_DEFINE([__sparc64__]) ;;
   *sparc*)          WINE_CHECK_DEFINE([__sparc__]) ;;
+  *powerpc64*)      WINE_CHECK_DEFINE([__powerpc64__]) ;;
   *powerpc*)        WINE_CHECK_DEFINE([__powerpc__]) ;;
   *arm*)            WINE_CHECK_DEFINE([__arm__]) ;;
 esac
-- 

Best Regards, André Hentschel