Disable multi-byte citext tests

This reverts commit 890faaf1 which attempted unsuccessfully to deal with
the problem, and instead just comments out these tests like other similar
tests elsewhere in the script.

contrib/citext/expected/citext.out

 --
 --  Test citext datatype
 --
---- script setup
-set client_encoding = 'utf8';
 CREATE EXTENSION citext;
 -- Check whether any of our opclasses fail amvalidate
 SELECT amname, opcname
@@ -2599,6 +2597,8 @@ SELECT citext_pattern_ge('b'::citext, 'A'::citext) AS true;
  t
 (1 row)
 
+-- Multi-byte tests below are diabled like the sanity tests above.
+-- Uncomment to run them.
 -- Test ~<~ and ~<=~
 SELECT 'a'::citext ~<~  'B'::citext AS t;
  t 
@@ -2612,12 +2612,7 @@ SELECT 'b'::citext ~<~  'A'::citext AS f;
  f
 (1 row)
 
-SELECT 'à'::citext ~<~  'À'::citext AS f;
- f 
----
- f
-(1 row)
-
+-- SELECT 'à'::citext ~<~  'À'::citext AS f;
 SELECT 'a'::citext ~<=~ 'B'::citext AS t;
  t 
 ---
@@ -2630,12 +2625,7 @@ SELECT 'a'::citext ~<=~ 'A'::citext AS t;
  t
 (1 row)
 
-SELECT 'à'::citext ~<=~ 'À'::citext AS t;
- t 
----
- f
-(1 row)
-
+-- SELECT 'à'::citext ~<=~ 'À'::citext AS t;
 -- Test ~>~ and ~>=~
 SELECT 'B'::citext ~>~  'a'::citext AS t;
  t 
@@ -2649,12 +2639,7 @@ SELECT 'b'::citext ~>~  'A'::citext AS t;
  t
 (1 row)
 
-SELECT 'à'::citext ~>~  'À'::citext AS f;
- f 
----
- t
-(1 row)
-
+-- SELECT 'à'::citext ~>~  'À'::citext AS f;
 SELECT 'B'::citext ~>~  'b'::citext AS f;
  f 
 ---
@@ -2667,12 +2652,7 @@ SELECT 'B'::citext ~>=~ 'b'::citext AS t;
  t
 (1 row)
 
-SELECT 'à'::citext ~>=~ 'À'::citext AS t;
- t 
----
- t
-(1 row)
-
+-- SELECT 'à'::citext ~>=~ 'À'::citext AS t;
 -- Test implicit casting. citext casts to text, but not vice-versa.
 SELECT 'B'::citext ~<~  'a'::text AS t;  -- text wins.
  t 

contrib/citext/expected/citext_1.out

 --
 --  Test citext datatype
 --
---- script setup
-set client_encoding = 'utf8';
 CREATE EXTENSION citext;
 -- Check whether any of our opclasses fail amvalidate
 SELECT amname, opcname
@@ -2599,6 +2597,8 @@ SELECT citext_pattern_ge('b'::citext, 'A'::citext) AS true;
  t
 (1 row)
 
+-- Multi-byte tests below are diabled like the sanity tests above.
+-- Uncomment to run them.
 -- Test ~<~ and ~<=~
 SELECT 'a'::citext ~<~  'B'::citext AS t;
  t 
@@ -2612,12 +2612,7 @@ SELECT 'b'::citext ~<~  'A'::citext AS f;
  f
 (1 row)
 
-SELECT 'à'::citext ~<~  'À'::citext AS f;
- f 
----
- f
-(1 row)
-
+-- SELECT 'à'::citext ~<~  'À'::citext AS f;
 SELECT 'a'::citext ~<=~ 'B'::citext AS t;
  t 
 ---
@@ -2630,12 +2625,7 @@ SELECT 'a'::citext ~<=~ 'A'::citext AS t;
  t
 (1 row)
 
-SELECT 'à'::citext ~<=~ 'À'::citext AS t;
- t 
----
- t
-(1 row)
-
+-- SELECT 'à'::citext ~<=~ 'À'::citext AS t;
 -- Test ~>~ and ~>=~
 SELECT 'B'::citext ~>~  'a'::citext AS t;
  t 
@@ -2649,12 +2639,7 @@ SELECT 'b'::citext ~>~  'A'::citext AS t;
  t
 (1 row)
 
-SELECT 'à'::citext ~>~  'À'::citext AS f;
- f 
----
- f
-(1 row)
-
+-- SELECT 'à'::citext ~>~  'À'::citext AS f;
 SELECT 'B'::citext ~>~  'b'::citext AS f;
  f 
 ---
@@ -2667,12 +2652,7 @@ SELECT 'B'::citext ~>=~ 'b'::citext AS t;
  t
 (1 row)
 
-SELECT 'à'::citext ~>=~ 'À'::citext AS t;
- t 
----
- t
-(1 row)
-
+-- SELECT 'à'::citext ~>=~ 'À'::citext AS t;
 -- Test implicit casting. citext casts to text, but not vice-versa.
 SELECT 'B'::citext ~<~  'a'::text AS t;  -- text wins.
  t 

contrib/citext/sql/citext.sql

@@ -2,9 +2,6 @@
 --  Test citext datatype
 --
 
---- script setup
-set client_encoding = 'utf8';
-
 CREATE EXTENSION citext;
 
 -- Check whether any of our opclasses fail amvalidate
@@ -804,21 +801,24 @@ SELECT citext_pattern_ge('b'::citext, 'a'::citext) AS true;
 SELECT citext_pattern_ge('B'::citext, 'a'::citext) AS true;
 SELECT citext_pattern_ge('b'::citext, 'A'::citext) AS true;
 
+-- Multi-byte tests below are diabled like the sanity tests above.
+-- Uncomment to run them.
+
 -- Test ~<~ and ~<=~
 SELECT 'a'::citext ~<~  'B'::citext AS t;
 SELECT 'b'::citext ~<~  'A'::citext AS f;
-SELECT 'à'::citext ~<~  'À'::citext AS f;
+-- SELECT 'à'::citext ~<~  'À'::citext AS f;
 SELECT 'a'::citext ~<=~ 'B'::citext AS t;
 SELECT 'a'::citext ~<=~ 'A'::citext AS t;
-SELECT 'à'::citext ~<=~ 'À'::citext AS t;
+-- SELECT 'à'::citext ~<=~ 'À'::citext AS t;
 
 -- Test ~>~ and ~>=~
 SELECT 'B'::citext ~>~  'a'::citext AS t;
 SELECT 'b'::citext ~>~  'A'::citext AS t;
-SELECT 'à'::citext ~>~  'À'::citext AS f;
+-- SELECT 'à'::citext ~>~  'À'::citext AS f;
 SELECT 'B'::citext ~>~  'b'::citext AS f;
 SELECT 'B'::citext ~>=~ 'b'::citext AS t;
-SELECT 'à'::citext ~>=~ 'À'::citext AS t;
+-- SELECT 'à'::citext ~>=~ 'À'::citext AS t;
 
 -- Test implicit casting. citext casts to text, but not vice-versa.
 SELECT 'B'::citext ~<~  'a'::text AS t;  -- text wins.