Shut up warnings about hex()/oct() that can't be avoided.

Lib/test/test_b1.py

 # Python test set -- part 4a, built-in functions a-m
 
+import warnings
+warnings.filterwarnings("ignore", "hex../oct.. of negative int",
+                        DeprecationWarning, __name__)
+
 from test.test_support import TestFailed, fcmp, have_unicode, TESTFN, unlink
 
 print '__import__'

Lib/test/test_b2.py

 # Python test set -- part 4b, built-in functions n-z
 
+import warnings
+warnings.filterwarnings("ignore", "hex../oct.. of negative int",
+                        DeprecationWarning, __name__)
+
 from test.test_support import TestFailed, fcmp, TESTFN, unlink, vereq
 
 print 'oct'