Update NSPR to 4.12 and NSS to 3.23 on iOS

nss/lib/nss/nss.h

Index: nss/lib/nss/nss.h
diff --git a/nss/lib/nss/nss.h b/nss/lib/nss/nss.h
index 2433cfc194942a5145cdbce06c333f292b89e711..38bb8e4624fcd82bdad580fc7a08c2d70f57be04 100644
--- a/nss/lib/nss/nss.h
+++ b/nss/lib/nss/nss.h
@@ -33,9 +33,9 @@
  * The format of the version string should be
  *     "<major version>.<minor version>[.<patch level>[.<build number>]][ <ECC>][ <Beta>]"
  */
-#define NSS_VERSION  "3.21" _NSS_ECC_STRING _NSS_CUSTOMIZED
+#define NSS_VERSION  "3.23" _NSS_ECC_STRING _NSS_CUSTOMIZED
 #define NSS_VMAJOR   3
-#define NSS_VMINOR   21
+#define NSS_VMINOR   23
 #define NSS_VPATCH   0
 #define NSS_VBUILD   0
 #define NSS_BETA     PR_FALSE
@@ -296,9 +296,13 @@ SECStatus NSS_UnregisterShutdown(NSS_ShutdownFunc sFunc, void *appData);
 
 /* Available options for NSS_OptionSet() and NSS_OptionGet().
  */
-#define NSS_RSA_MIN_KEY_SIZE (1<<0)
-#define NSS_DH_MIN_KEY_SIZE  (1<<1)
-#define NSS_DSA_MIN_KEY_SIZE (1<<2)
+#define NSS_RSA_MIN_KEY_SIZE        0x001
+#define NSS_DH_MIN_KEY_SIZE         0x002
+#define NSS_DSA_MIN_KEY_SIZE        0x004
+#define NSS_TLS_VERSION_MIN_POLICY  0x008
+#define NSS_TLS_VERSION_MAX_POLICY  0x009
+#define NSS_DTLS_VERSION_MIN_POLICY 0x00a
+#define NSS_DTLS_VERSION_MAX_POLICY 0x00b
 
 /*
  * Set and get global options for the NSS library.