Add missing pgcrypto files.

contrib/pgcrypto/sql/hmac-sha1.sql

@@ -0,0 +1,46 @@
+--
+-- HMAC-MD5
+--
+
+select encode(hmac(
+'Hi There',
+decode('0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b', 'hex'),
+'sha1'), 'hex');
+
+-- 2
+select encode(hmac(
+'Jefe',
+'what do ya want for nothing?',
+'sha1'), 'hex');
+
+-- 3
+select encode(hmac(
+decode('dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', 'hex'),
+decode('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'hex'),
+'sha1'), 'hex');
+
+-- 4
+select encode(hmac(
+decode('cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd', 'hex'),
+decode('0102030405060708090a0b0c0d0e0f10111213141516171819', 'hex'),
+'sha1'), 'hex');
+
+-- 5
+select encode(hmac(
+'Test With Truncation',
+decode('0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c', 'hex'),
+'sha1'), 'hex');
+
+-- 6
+select encode(hmac(
+'Test Using Larger Than Block-Size Key - Hash Key First',
+decode('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'hex'),
+'sha1'), 'hex');
+
+-- 7
+select encode(hmac(
+'Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data',
+decode('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'hex'),
+'sha1'), 'hex');
+
+