Update to NSPR 4.10.7 Beta 3.

nspr/pr/include/md/_linux.h

Index: nspr/pr/include/md/_linux.h
diff --git a/nspr/pr/include/md/_linux.h b/nspr/pr/include/md/_linux.h
index 906822fb8416ddc63911c4e4b0bff37448b7dd9c..278f90cd6c9e3c9d6a6541434f3116da09fa1538 100644
--- a/nspr/pr/include/md/_linux.h
+++ b/nspr/pr/include/md/_linux.h
@@ -80,7 +80,7 @@
 #define NO_DLOPEN_NULL
 #endif
 
-#ifdef __FreeBSD_kernel__
+#if defined(__FreeBSD_kernel__) || defined(__GNU__)
 #define _PR_HAVE_SOCKADDR_LEN
 #endif
 
@@ -136,6 +136,18 @@ extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET                _PR_ppc_AtomicSet
 #endif
 
+#if defined(__powerpc64__)
+#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+/* Use GCC built-in functions */
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
+#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
+#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
+#endif
+#endif
+
 #if defined(__alpha)
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()