Add alternative expected file for unicode test for client encoding not UTF8

src/pl/plpython/expected/README

@@ -3,7 +3,8 @@ Guide to alternative expected files:
 plpython_error_2.out		Python 2.2, 2.3, 2.4
 plpython_error.out			Python 2.5, 2.6
 
-plpython_unicode.out		any version, when server encoding != SQL_ASCII; else ...
+plpython_unicode.out		any version, when server encoding != SQL_ASCII and client encoding = UTF8; else ...
+plpython_unicode_0.out		any version, when server encoding != SQL_ASCII and client encoding != UTF8; else ...
 plpython_unicode_2.out		Python 2.2
 plpython_unicode_3.out		Python 2.3, 2.4
 plpython_unicode_5.out		Python 2.5, 2.6

src/pl/plpython/expected/plpython_unicode_0.out

+--
+-- Unicode handling
+--
+CREATE TABLE unicode_test (
+	testvalue  text NOT NULL
+);
+CREATE FUNCTION unicode_return() RETURNS text AS E'
+return u"\\x80"
+' LANGUAGE plpythonu;
+CREATE FUNCTION unicode_trigger() RETURNS trigger AS E'
+TD["new"]["testvalue"] = u"\\x80"
+return "MODIFY"
+' LANGUAGE plpythonu;
+CREATE TRIGGER unicode_test_bi BEFORE INSERT ON unicode_test
+  FOR EACH ROW EXECUTE PROCEDURE unicode_trigger();
+CREATE FUNCTION unicode_plan1() RETURNS text AS E'
+plan = plpy.prepare("SELECT $1 AS testvalue", ["text"])
+rv = plpy.execute(plan, [u"\\x80"], 1)
+return rv[0]["testvalue"]
+' LANGUAGE plpythonu;
+CREATE FUNCTION unicode_plan2() RETURNS text AS E'
+plan = plpy.prepare("SELECT $1 || $2 AS testvalue", ["text", u"text"])
+rv = plpy.execute(plan, ["foo", "bar"], 1)
+return rv[0]["testvalue"]
+' LANGUAGE plpythonu;
+SELECT unicode_return();
+ unicode_return 
+----------------
+ 
+(1 row)
+
+INSERT INTO unicode_test (testvalue) VALUES ('test');
+SELECT * FROM unicode_test;
+ testvalue 
+-----------
+ 
+(1 row)
+
+SELECT unicode_plan1();
+ unicode_plan1 
+---------------
+ 
+(1 row)
+
+SELECT unicode_plan2();
+ unicode_plan2 
+---------------
+ foobar
+(1 row)
+