Patch #1049151:  adding bool support to xdrlib.py.
Also add xdrlib._test into the test suite.
diff --git a/Lib/xdrlib.py b/Lib/xdrlib.py
index 1123090..d9d2120 100644
--- a/Lib/xdrlib.py
+++ b/Lib/xdrlib.py
@@ -157,7 +157,9 @@
         return struct.unpack('>l', data)[0]
 
     unpack_enum = unpack_int
-    unpack_bool = unpack_int
+
+    def unpack_bool(self):
+        return bool(self.unpack_int())
 
     def unpack_uhyper(self):
         hi = self.unpack_uint()
@@ -232,8 +234,8 @@
     p = Packer()
     packtest = [
         (p.pack_uint,    (9,)),
-        (p.pack_bool,    (None,)),
-        (p.pack_bool,    ('hello',)),
+        (p.pack_bool,    (True,)),
+        (p.pack_bool,    (False,)),
         (p.pack_uhyper,  (45L,)),
         (p.pack_float,   (1.9,)),
         (p.pack_double,  (1.9,)),
@@ -257,8 +259,8 @@
     up = Unpacker(data)
     unpacktest = [
         (up.unpack_uint,   (), lambda x: x == 9),
-        (up.unpack_bool,   (), lambda x: not x),
-        (up.unpack_bool,   (), lambda x: x),
+        (up.unpack_bool,   (), lambda x: x is True),
+        (up.unpack_bool,   (), lambda x: x is False),
         (up.unpack_uhyper, (), lambda x: x == 45L),
         (up.unpack_float,  (), lambda x: 1.89 < x < 1.91),
         (up.unpack_double, (), lambda x: 1.89 < x < 1.91),