Minor fixes in contrib installation scripts.

Extension scripts should never use CREATE OR REPLACE for initial object
creation.  If there is a collision with a pre-existing (probably
user-created) object, we want extension installation to fail, not silently
overwrite the user's object.  Bloom and sslinfo both violated this precept.

Also fix a number of scripts that had no standard header (the file name
comment and the \echo...\quit guard).  Probably the \echo...\quit hack
is less important now than it was in 9.1 days, but that doesn't mean
that individual extensions get to choose whether to use it or not.

And fix a couple of evident copy-and-pasteos in file name comments.

No need for back-patch: the REPLACE bugs are both new in 9.6, and the
rest of this is pretty much cosmetic.

Andreas Karlsson and Tom Lane

13 files changed, 50 insertions, 5 deletions

diff --git a/contrib/bloom/bloom--1.0.sql b/contrib/bloom/bloom--1.0.sql
index 87b54425681..4e7c9226bcd 100644
--- a/contrib/bloom/bloom--1.0.sql
+++ b/contrib/bloom/bloom--1.0.sql
@@ -1,4 +1,9 @@
-CREATE OR REPLACE FUNCTION blhandler(internal)
+/* contrib/bloom/bloom--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION bloom" to load this file. \quit
+
+CREATE FUNCTION blhandler(internal)
 RETURNS index_am_handler
 AS 'MODULE_PATHNAME'
 LANGUAGE C;
diff --git a/contrib/hstore_plperl/hstore_plperl--1.0.sql b/contrib/hstore_plperl/hstore_plperl--1.0.sql
index a4fd7c22db8..9a64fcb18be 100644
--- a/contrib/hstore_plperl/hstore_plperl--1.0.sql
+++ b/contrib/hstore_plperl/hstore_plperl--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/hstore_plperl/hstore_plperl--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION hstore_plperl" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plperl';
 SELECT NULL::hstore;
diff --git a/contrib/hstore_plperl/hstore_plperlu--1.0.sql b/contrib/hstore_plperl/hstore_plperlu--1.0.sql
index 2c2e3e3848a..f3552849075 100644
--- a/contrib/hstore_plperl/hstore_plperlu--1.0.sql
+++ b/contrib/hstore_plperl/hstore_plperlu--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/hstore_plperl/hstore_plperlu--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION hstore_plperlu" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plperl';
 SELECT NULL::hstore;
diff --git a/contrib/hstore_plpython/hstore_plpython2u--1.0.sql b/contrib/hstore_plpython/hstore_plpython2u--1.0.sql
index a793dc9c0cd..e3aea6399e9 100644
--- a/contrib/hstore_plpython/hstore_plpython2u--1.0.sql
+++ b/contrib/hstore_plpython/hstore_plpython2u--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/hstore_plpython/hstore_plpython2u--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION hstore_plpython2u" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plpython2';
 SELECT NULL::hstore;
diff --git a/contrib/hstore_plpython/hstore_plpython3u--1.0.sql b/contrib/hstore_plpython/hstore_plpython3u--1.0.sql
index a85c85d4c1b..a964a49059a 100644
--- a/contrib/hstore_plpython/hstore_plpython3u--1.0.sql
+++ b/contrib/hstore_plpython/hstore_plpython3u--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/hstore_plpython/hstore_plpython3u--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION hstore_plpython3u" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plpython3';
 SELECT NULL::hstore;
diff --git a/contrib/hstore_plpython/hstore_plpythonu--1.0.sql b/contrib/hstore_plpython/hstore_plpythonu--1.0.sql
index e2e4721dca9..d79bdc96d99 100644
--- a/contrib/hstore_plpython/hstore_plpythonu--1.0.sql
+++ b/contrib/hstore_plpython/hstore_plpythonu--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/hstore_plpython/hstore_plpythonu--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION hstore_plpythonu" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plpython2';  -- change to plpython3 if that ever becomes the default
 SELECT NULL::hstore;
diff --git a/contrib/ltree_plpython/ltree_plpython2u--1.0.sql b/contrib/ltree_plpython/ltree_plpython2u--1.0.sql
index f040bd3f561..62531371bf9 100644
--- a/contrib/ltree_plpython/ltree_plpython2u--1.0.sql
+++ b/contrib/ltree_plpython/ltree_plpython2u--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/ltree_plpython/ltree_plpython2u--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION ltree_plpython2u" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plpython2';
 SELECT NULL::ltree;
diff --git a/contrib/ltree_plpython/ltree_plpython3u--1.0.sql b/contrib/ltree_plpython/ltree_plpython3u--1.0.sql
index 7afe51f1483..3f21d1b7210 100644
--- a/contrib/ltree_plpython/ltree_plpython3u--1.0.sql
+++ b/contrib/ltree_plpython/ltree_plpython3u--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/ltree_plpython/ltree_plpython3u--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION ltree_plpython3u" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plpython3';
 SELECT NULL::ltree;
diff --git a/contrib/ltree_plpython/ltree_plpythonu--1.0.sql b/contrib/ltree_plpython/ltree_plpythonu--1.0.sql
index 50f35dd16b0..e8deadc62d0 100644
--- a/contrib/ltree_plpython/ltree_plpythonu--1.0.sql
+++ b/contrib/ltree_plpython/ltree_plpythonu--1.0.sql
@@ -1,3 +1,8 @@
+/* contrib/ltree_plpython/ltree_plpythonu--1.0.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION ltree_plpythonu" to load this file. \quit
+
 -- make sure the prerequisite libraries are loaded
 LOAD 'plpython2';  -- change to plpython3 if that ever becomes the default
 SELECT NULL::ltree;
diff --git a/contrib/pgcrypto/pgcrypto--1.3.sql b/contrib/pgcrypto/pgcrypto--1.3.sql
index 90d0946de2c..c2628caceb5 100644
--- a/contrib/pgcrypto/pgcrypto--1.3.sql
+++ b/contrib/pgcrypto/pgcrypto--1.3.sql
@@ -1,4 +1,4 @@
-/* contrib/pgcrypto/pgcrypto--1.2.sql */
+/* contrib/pgcrypto/pgcrypto--1.3.sql */
 
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "CREATE EXTENSION pgcrypto" to load this file. \quit
diff --git a/contrib/pgrowlocks/pgrowlocks--1.2.sql b/contrib/pgrowlocks/pgrowlocks--1.2.sql
index 58df728c07e..ff76b8b68a4 100644
--- a/contrib/pgrowlocks/pgrowlocks--1.2.sql
+++ b/contrib/pgrowlocks/pgrowlocks--1.2.sql
@@ -1,4 +1,4 @@
-/* contrib/pgrowlocks/pgrowlocks--1.1.sql */
+/* contrib/pgrowlocks/pgrowlocks--1.2.sql */
 
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "CREATE EXTENSION pgrowlocks" to load this file. \quit
diff --git a/contrib/pgstattuple/pgstattuple--1.4.sql b/contrib/pgstattuple/pgstattuple--1.4.sql
index 69f20025667..47377ebe79e 100644
--- a/contrib/pgstattuple/pgstattuple--1.4.sql
+++ b/contrib/pgstattuple/pgstattuple--1.4.sql
@@ -1,4 +1,4 @@
-/* contrib/pgstattuple/pgstattuple--1.3.sql */
+/* contrib/pgstattuple/pgstattuple--1.4.sql */
 
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "CREATE EXTENSION pgstattuple" to load this file. \quit
diff --git a/contrib/sslinfo/sslinfo--1.0--1.1.sql b/contrib/sslinfo/sslinfo--1.0--1.1.sql
index 4c26c6e1cf0..12d341f2075 100644
--- a/contrib/sslinfo/sslinfo--1.0--1.1.sql
+++ b/contrib/sslinfo/sslinfo--1.0--1.1.sql
@@ -3,7 +3,7 @@
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "ALTER EXTENSION sslinfo UPDATE TO '1.1'" to load this file. \quit
 
-CREATE OR REPLACE FUNCTION
+CREATE FUNCTION
 ssl_extension_info(OUT name text,
 	OUT value text,
     OUT critical boolean