Force 32bit Keccak implementation on SPARC. It look like the Solaris CC...

Force 32bit Keccak implementation on SPARC. It look like the Solaris CC compiler doesn't like the address alignment.

Modules/_sha3/sha3module.c

@@ -95,21 +95,27 @@
  *
  * *************************************************************************/
 
-#if SIZEOF_VOID_P == 8 && defined(PY_UINT64_T)
- /* 64bit platforms with unsigned int64 */
-  #define KeccakImplementation 64
+#ifdef __sparc
+  /* On SPARC with Solaris CC opt64 fails with 'invalid address alignment' */
+  #define KeccakOpt 32
+#elif SIZEOF_VOID_P == 8
+  #define KeccakOpt 64
+#elif SIZEOF_VOID_P == 4
+  #define KeccakOpt 32
+#endif
+
+#if KeccakOpt == 64 && defined(PY_UINT64_T)
+  /* 64bit platforms with unsigned int64 */
   #define Unrolling 24
   #define UseBebigokimisa
   typedef PY_UINT64_T UINT64;
-#elif SIZEOF_VOID_P == 4  && defined(PY_UINT64_T)
+#elif KeccakOpt == 32  && defined(PY_UINT64_T)
   /* 32bit platforms with unsigned int64 */
-  #define KeccakImplementation 32
   #define Unrolling 2
   #define UseSchedule 3
   typedef PY_UINT64_T UINT64;
 #else
   /* 32 or 64bit platforms without unsigned int64 */
-  #define KeccakImplementation 32
   #define Unrolling 2
   #define UseSchedule 3
   #define UseInterleaveTables
@@ -125,9 +131,9 @@
 #include "keccak/KeccakNISTInterface.h"
 #include "keccak/KeccakNISTInterface.c"
 #include "keccak/KeccakSponge.c"
-#if KeccakImplementation == 64
+#if KeccakOpt == 64
   #include "keccak/KeccakF-1600-opt64.c"
-#elif KeccakImplementation == 32
+#elif KeccakOpt == 32
   #include "keccak/KeccakF-1600-opt32.c"
 #endif