Bug 492464: Update NSPR to NSPR_4_8_RTM.

Fix bug 492779 and bug 493378.

nsprpub/config/prdepend.h

@@ -42,4 +42,3 @@
  */
 
 #error "Do not include this header file."
-

nsprpub/lib/libc/src/base64.c

@@ -155,7 +155,13 @@ PL_Base64Encode
 
     if( (char *)0 == dest )
     {
-        PRUint32 destlen = ((srclen + 2)/3) * 4;
+        PRUint32 destlen;
+        /* Ensure all PRUint32 values stay within range. */
+        if( srclen > (PR_UINT32_MAX/4) * 3 )
+        {
+            return (char *)0;
+        }
+        destlen = ((srclen + 2)/3) * 4;
         dest = (char *)PR_MALLOC(destlen + 1);
         if( (char *)0 == dest )
         {
@@ -403,7 +409,9 @@ PL_Base64Decode
 
     if( (char *)0 == dest )
     {
-        PRUint32 destlen = ((srclen * 3) / 4);
+        /* The following computes ((srclen * 3) / 4) without overflow. */
+        PRUint32 rem = srclen % 4;
+        PRUint32 destlen = (srclen / 4) * 3 + (rem * 3) / 4;
         dest = (char *)PR_MALLOC(destlen + 1);
         if( (char *)0 == dest )
         {

nsprpub/lib/libc/src/strlen.c

@@ -53,7 +53,7 @@ PL_strlen(const char *str)
      * we don't have ultra long strings that overflow an int32
      */ 
     if( sizeof(PRUint32) < sizeof(size_t) )
-        PR_ASSERT(l < 2147483647);
+        PR_ASSERT(l <= PR_INT32_MAX);
 
     return (PRUint32)l;
 }

nsprpub/pr/include/obsolete/protypes.h

@@ -72,8 +72,10 @@ typedef PRIntn intn;
  *
  * On AIX 4.3, sys/inttypes.h (which is included by sys/types.h)
  * defines the types int8, int16, int32, and int64.
+ *
+ * On OS/2, sys/types.h defines uint.
  */
-#ifdef XP_UNIX
+#if defined(XP_UNIX) || defined(XP_OS2)
 #include <sys/types.h>
 #endif
 
@@ -86,7 +88,7 @@ typedef PRIntn intn;
  * uint
  */
 
-#if !defined(XP_BEOS) && !defined(XP_UNIX) || defined(NTO)
+#if !defined(XP_BEOS) && !defined(XP_OS2) && !defined(XP_UNIX) || defined(NTO)
 typedef PRUintn uint;
 #endif
 

nsprpub/pr/include/prinit.h

@@ -63,11 +63,11 @@ PR_BEGIN_EXTERN_C
 ** The format of the version string is
 **     "<major version>.<minor version>[.<patch level>] [<Beta>]"
 */
-#define PR_VERSION  "4.8 Beta 2"
+#define PR_VERSION  "4.8"
 #define PR_VMAJOR   4
 #define PR_VMINOR   8
 #define PR_VPATCH   0
-#define PR_BETA     PR_TRUE
+#define PR_BETA     PR_FALSE
 
 /*
 ** PRVersionCheck