Update to NSS 3.12.7 and NSPR 4.8.6....

nss/mozilla/nsprpub/pr/src/misc/prsystem.c

Index: nss/mozilla/nsprpub/pr/src/misc/prsystem.c
===================================================================
--- nss/mozilla/nsprpub/pr/src/misc/prsystem.c	(revision 55475)
+++ nss/mozilla/nsprpub/pr/src/misc/prsystem.c	(working copy)
@@ -284,6 +284,20 @@
     long pageCount = sysconf(_SC_PHYS_PAGES);
     bytes = (PRUint64) pageSize * pageCount;
 
+#elif defined(NETBSD)
+
+    int mib[2];
+    int rc;
+    uint64_t memSize;
+    size_t len = sizeof(memSize);
+
+    mib[0] = CTL_HW;
+    mib[1] = HW_PHYSMEM64;
+    rc = sysctl(mib, 2, &memSize, &len, NULL, 0);
+    if (-1 != rc)  {
+        bytes = memSize;
+    }
+
 #elif defined(HPUX)
 
     struct pst_static info;