Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nss/lib/softoken/lowpbe.c

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "plarena.h"
 
 #include "seccomon.h"
 #include "secitem.h"
 #include "secport.h"
 #include "hasht.h"
@@ skipping 498 matching lines @@
                 hashObject->update(hash, I.data, I.len); 
             }
 
             hashObject->end(hash, iterBuf, &hashLen, hashObject->length);
             if(hashLen != hashObject->length) {
                 break;
             }
         }
 
         PORT_Memcpy(Ai, iterBuf, hashLength);
-        for (Bidx = 0; Bidx < B.len; Bidx += hashLength) {
+        for (Bidx = 0; Bidx < (int)B.len; Bidx += hashLength) {
             PORT_Memcpy(B.data+Bidx,iterBuf,NSSPBE_MIN(B.len-Bidx,hashLength));
         }
 
         k = I.len/B.len;
         for(j = 0; j < k; j++) {
             unsigned int q, carryBit;
             unsigned char *Ij = I.data + j*B.len;
 
             /* (Ij = Ij+B+1) */
             for (Bidx = (B.len-1), q=1, carryBit=0; Bidx >= 0; Bidx--,q=0) {
@@ skipping 839 matching lines @@
     rv = SECOID_CopyAlgorithmID(NULL, ret_algid, algid);
     if (rv != SECSuccess) {
         SECOID_DestroyAlgorithmID(ret_algid, PR_TRUE);
         ret_algid = NULL;
     }
 
 loser:  
 
     return ret_algid;
 }