Enable Opteron/Itanium spinlocks.

src/include/port/bsdi.h

-#if defined(__i386__)
+#if defined(__i386__) || defined(__x86_64__)
 #define NEED_I386_TAS_ASM
+typedef unsigned char slock_t;
+#endif
+#if defined(__ia64)
+typedef unsigned int slock_t;
 #endif
 #if defined(__sparc__)
 #define NEED_SPARC_TAS_ASM
+typedef unsigned char slock_t;
 #endif
 
 #define HAS_TEST_AND_SET
 
-typedef unsigned char slock_t;

src/include/port/freebsd.h

-#if defined(__i386__)
+#if defined(__i386__) || defined(__x86_64__)
 #define NEED_I386_TAS_ASM
 #define HAS_TEST_AND_SET
 typedef unsigned char slock_t;
 #endif
 
+#if defined(__ia64)
+#define HAS_TEST_AND_SET
+typedef unsigned int slock_t;
+#endif
+
 #if defined(__sparc__)
 #define NEED_SPARC_TAS_ASM
 #define HAS_TEST_AND_SET

src/include/port/netbsd.h

-#if defined(__i386__)
+#if defined(__i386__) || defined(__x86_64__)
 #define NEED_I386_TAS_ASM
 #define HAS_TEST_AND_SET
 typedef unsigned char slock_t;
 #endif
 
+#if defined(__ia64)
+#define HAS_TEST_AND_SET
+typedef unsigned int slock_t;
+#endif
+
 #if defined(__sparc__)
 #define NEED_SPARC_TAS_ASM
 #define HAS_TEST_AND_SET

src/include/port/openbsd.h

-#if defined(__i386__)
+#if defined(__i386__) || defined(__x86_64__)
 #define NEED_I386_TAS_ASM
 #define HAS_TEST_AND_SET
 typedef unsigned char slock_t;
 #endif
 
+#if defined(__ia64)
+#define HAS_TEST_AND_SET
+typedef unsigned int slock_t;
+#endif
+
 #if defined(__sparc__)
 #define NEED_SPARC_TAS_ASM
 #define HAS_TEST_AND_SET

src/include/port/sco.h

@@ -6,7 +6,12 @@
 
 #define USE_UNIVEL_CC
 
+#if defined(__ia64)
+typedef unsigned int slock_t;
+#else
 typedef unsigned char slock_t;
+#endif
+
 
 #ifndef			BIG_ENDIAN
 #define			BIG_ENDIAN		4321

src/include/port/univel.h

@@ -7,7 +7,12 @@
  ***************************************/
 #define USE_UNIVEL_CC
 
+#if defined(__ia64)
+typedef unsigned int slock_t;
+#else
 typedef unsigned char slock_t;
+#endif
+
 
 #ifndef			BIG_ENDIAN
 #define			BIG_ENDIAN		4321

src/include/port/unixware.h

@@ -10,7 +10,12 @@
  ***************************************/
 #define USE_UNIVEL_CC
 
+#if defined(__ia64)
+typedef unsigned int slock_t;
+#else
 typedef unsigned char slock_t;
+#endif
+
 
 #ifndef			BIG_ENDIAN
 #define			BIG_ENDIAN		4321