Ooops, missed that a couple of contrib modules have calls to byteacmp.

Add bytea.h inclusions as needed.  Some of the contrib regression tests
need to be de-hexified, too.  Per buildfarm.

contrib/pgcrypto/sql/blowfish.sql

@@ -1,6 +1,8 @@
 --
 -- Blowfish cipher
 --
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
 
 -- some standard Blowfish testvalues
 SELECT encode(encrypt(

contrib/pgcrypto/sql/init.sql

@@ -12,6 +12,9 @@ SET client_min_messages = warning;
 \set ECHO all
 RESET client_min_messages;
 
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
+
 -- check for encoding fn's
 SELECT encode('foo', 'hex');
 SELECT decode('666f6f', 'hex');

contrib/pgcrypto/sql/pgp-armor.sql

@@ -1,6 +1,8 @@
 --
 -- PGP Armor
 --
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
 
 select armor('');
 select armor('test');

contrib/pgcrypto/sql/pgp-encrypt.sql

@@ -1,6 +1,8 @@
 --
 -- PGP encrypt
 --
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
 
 select pgp_sym_decrypt(pgp_sym_encrypt('Secret.', 'key'), 'key');
 

contrib/pgcrypto/sql/pgp-pubkey-encrypt.sql

@@ -1,6 +1,8 @@
 --
 -- PGP Public Key Encryption
 --
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
 
 -- successful encrypt/decrypt
 select pgp_pub_decrypt(

contrib/pgcrypto/sql/rijndael.sql

@@ -1,6 +1,8 @@
 --
 -- AES / Rijndael-128 cipher
 --
+-- ensure consistent test output regardless of the default bytea format
+SET bytea_output TO escape;
 
 -- some standard Rijndael testvalues
 SELECT encode(encrypt(