Update to NSS 3.12.7 and NSPR 4.8.6....

nss/mozilla/nsprpub/pr/include/prtypes.h

Index: nss/mozilla/nsprpub/pr/include/prtypes.h
===================================================================
--- nss/mozilla/nsprpub/pr/include/prtypes.h	(revision 55475)
+++ nss/mozilla/nsprpub/pr/include/prtypes.h	(working copy)
@@ -435,7 +435,7 @@
 **      for storing a pointer or pointer sutraction. 
 ************************************************************************/
 #ifdef _WIN64
-typedef unsigned __int64 PRUptrdiff;
+typedef PRUint64 PRUptrdiff;
 #else
 typedef unsigned long PRUptrdiff;
 #endif
@@ -487,8 +487,8 @@
 ** http://java.sun.com/docs/books/vmspec/index.html.)
 */
 #ifdef _WIN64
-typedef __int64 PRWord;
-typedef unsigned __int64 PRUword;
+typedef PRInt64 PRWord;
+typedef PRUint64 PRUword;
 #else
 typedef long PRWord;
 typedef unsigned long PRUword;
@@ -535,6 +535,14 @@
 /********* ????????????? End Fix me ?????????????????????????????? *****/
 #endif /* NO_NSPR_10_SUPPORT */
 
+/*
+** Compile-time assert. "condition" must be a constant expression.
+** The macro can be used only in places where an "extern" declaration is
+** allowed.
+*/
+#define PR_STATIC_ASSERT(condition) \
+    extern void pr_static_assert(int arg[(condition) ? 1 : -1])
+
 PR_END_EXTERN_C
 
 #endif /* prtypes_h___ */