Update third_party/tlslite to 0.4.8.

third_party/tlslite/patches/pycrypto_python2.patch

-diff --git a/third_party/tlslite/tlslite/utils/compat.py b/third_party/tlslite/tlslite/utils/compat.py
-index 2bcaede..db95ac1 100755
---- a/third_party/tlslite/tlslite/utils/compat.py
-+++ b/third_party/tlslite/tlslite/utils/compat.py
-@@ -51,6 +51,9 @@ if sys.version_info >= (3,0):
-     def readStdinBinary():
-         return sys.stdin.buffer.read()        
- 
-+    def long(n):
-+        return n
-+
- else:
-     # Python 2.6 requires strings instead of bytearrays in a couple places,
-     # so we define this function so it does the conversion if needed.
-diff --git a/third_party/tlslite/tlslite/utils/cryptomath.py b/third_party/tlslite/tlslite/utils/cryptomath.py
-index ce56b4b..30354b2 100755
---- a/third_party/tlslite/tlslite/utils/cryptomath.py
-+++ b/third_party/tlslite/tlslite/utils/cryptomath.py
-@@ -94,7 +94,9 @@ def bytesToNumber(b):
-         byte = b[count]
-         total += multiplier * byte
-         multiplier *= 256
--    return total
-+    # Force-cast to long to appease PyCrypto.
-+    # https://github.com/trevp/tlslite/issues/15
-+    return long(total)
- 
- def numberToByteArray(n, howManyBytes=None):
-     """Convert an integer into a bytearray, zero-pad to howManyBytes.
-diff --git a/third_party/tlslite/tlslite/utils/pycrypto_rsakey.py b/third_party/tlslite/tlslite/utils/pycrypto_rsakey.py
-index 3d56228..4de5436 100755
---- a/third_party/tlslite/tlslite/utils/pycrypto_rsakey.py
-+++ b/third_party/tlslite/tlslite/utils/pycrypto_rsakey.py
-@@ -26,13 +26,13 @@ if pycryptoLoaded:
-             return self.rsa.has_private()
- 
-         def _rawPrivateKeyOp(self, m):
--            s = numberToString(m, numBytes(self.n))
--            c = stringToNumber(self.rsa.decrypt((s,)))
-+            s = bytes(numberToByteArray(m, numBytes(self.n)))
-+            c = bytesToNumber(bytearray(self.rsa.decrypt((s,))))
-             return c
- 
-         def _rawPublicKeyOp(self, c):
--            s = numberToString(c, numBytes(self.n))
--            m = stringToNumber(self.rsa.encrypt(s, None)[0])
-+            s = bytes(numberToByteArray(c, numBytes(self.n)))
-+            m = bytesToNumber(bytearray(self.rsa.encrypt(s, None)[0]))
-             return m
- 
-         def generate(bits):