Added Jeremy's test code for the sha module.

Lib/test/output/test_sha

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+test_sha
+test 0 ok
+test 1 ok
+test 2 ok

Lib/test/test_sha.py

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+# Testing sha module (NIST's Secure Hash Algorithm)
+
+import sha
+
+# use the three examples from Federal Information Processing Standards
+# Publication 180-1, Secure Hash Standard,  1995 April 17
+# http://www.itl.nist.gov/div897/pubs/fip180-1.htm
+
+s = [''] * 3
+d = [''] * 3
+
+s[0] = 'abc'
+d[0] = 'a9993e364706816aba3e25717850c26c9cd0d89d'
+
+s[1] = 'abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq'
+d[1] = '84983e441c3bd26ebaae4aa1f95129e5e54670f1'
+
+s[2] = 'a' * 1000000
+d[2] = '34aa973cd4c4daa4f61eeb2bdbad27316534016f'
+
+for i in range(3):
+    test = sha.new(s[i]).hexdigest()
+    if test == d[i]:
+        print "test %d ok" % i
+    else:
+        print "test %d failed" % i
+        print "expected", d[i]
+        print "computed", test