Convert contrib modules to use the extension facility.

This isn't fully tested as yet, in particular I'm not sure that the
"foo--unpackaged--1.0.sql" scripts are OK.  But it's time to get some
buildfarm cycles on it.

sepgsql is not converted to an extension, mainly because it seems to
require a very nonstandard installation process.

Dimitri Fontaine and Tom Lane

contrib/earthdistance/.gitignore

@@ -1,3 +1,2 @@
-/earthdistance.sql
 # Generated subdirectories
 /results/

contrib/earthdistance/Makefile

@@ -1,8 +1,10 @@
 # contrib/earthdistance/Makefile
 
 MODULES = earthdistance
-DATA_built = earthdistance.sql
-DATA = uninstall_earthdistance.sql
+
+EXTENSION = earthdistance
+DATA = earthdistance--1.0.sql earthdistance--unpackaged--1.0.sql
+
 REGRESS = earthdistance
 
 LDFLAGS_SL += $(filter -lm, $(LIBS))

contrib/earthdistance/earthdistance--1.0.sql

@@ -1,9 +1,4 @@
-/* contrib/earthdistance/earthdistance.sql.in */
-
--- Adjust this setting to control where the objects get created.
-SET search_path = public;
-
--- The earth functions rely on contrib/cube having been installed and loaded.
+/* contrib/earthdistance/earthdistance--1.0.sql */
 
 -- earth() returns the radius of the earth in meters. This is the only
 -- place you need to change things for the cube base distance functions

contrib/earthdistance/earthdistance--unpackaged--1.0.sql

@@ -0,0 +1,13 @@
+/* contrib/earthdistance/earthdistance--unpackaged--1.0.sql */
+
+ALTER EXTENSION earthdistance ADD function earth();
+ALTER EXTENSION earthdistance ADD type earth;
+ALTER EXTENSION earthdistance ADD function sec_to_gc(double precision);
+ALTER EXTENSION earthdistance ADD function gc_to_sec(double precision);
+ALTER EXTENSION earthdistance ADD function ll_to_earth(double precision,double precision);
+ALTER EXTENSION earthdistance ADD function latitude(earth);
+ALTER EXTENSION earthdistance ADD function longitude(earth);
+ALTER EXTENSION earthdistance ADD function earth_distance(earth,earth);
+ALTER EXTENSION earthdistance ADD function earth_box(earth,double precision);
+ALTER EXTENSION earthdistance ADD function geo_distance(point,point);
+ALTER EXTENSION earthdistance ADD operator <@>(point,point);

contrib/earthdistance/earthdistance.control

@@ -0,0 +1,6 @@
+# earthdistance extension
+comment = 'calculate great-circle distances on the surface of the Earth'
+default_version = '1.0'
+module_pathname = '$libdir/earthdistance'
+relocatable = true
+requires = 'cube'

contrib/earthdistance/expected/earthdistance.out

@@ -1,13 +1,8 @@
 --
 --  Test earth distance functions
 --
---
--- first, define the datatype.  Turn off echoing so that expected file
--- does not depend on contents of earthdistance.sql or cube.sql.
---
-SET client_min_messages = warning;
-\set ECHO none
-RESET client_min_messages;
+CREATE EXTENSION cube;
+CREATE EXTENSION earthdistance;
 --
 -- The radius of the Earth we are using.
 --

contrib/earthdistance/sql/earthdistance.sql

@@ -2,16 +2,8 @@
 --  Test earth distance functions
 --
 
---
--- first, define the datatype.  Turn off echoing so that expected file
--- does not depend on contents of earthdistance.sql or cube.sql.
---
-SET client_min_messages = warning;
-\set ECHO none
-\i ../cube/cube.sql
-\i earthdistance.sql
-\set ECHO all
-RESET client_min_messages;
+CREATE EXTENSION cube;
+CREATE EXTENSION earthdistance;
 
 --
 -- The radius of the Earth we are using.

contrib/earthdistance/uninstall_earthdistance.sql

@@ -1,26 +0,0 @@
-/* contrib/earthdistance/uninstall_earthdistance.sql */
-
--- Adjust this setting to control where the objects get dropped.
-SET search_path = public;
-
-DROP OPERATOR <@> (point, point);
-
-DROP FUNCTION geo_distance (point, point);
-
-DROP FUNCTION earth_box(earth, float8);
-
-DROP FUNCTION earth_distance(earth, earth);
-
-DROP FUNCTION longitude(earth);
-
-DROP FUNCTION latitude(earth);
-
-DROP FUNCTION ll_to_earth(float8, float8);
-
-DROP FUNCTION gc_to_sec(float8);
-
-DROP FUNCTION sec_to_gc(float8);
-
-DROP DOMAIN earth;
-
-DROP FUNCTION earth();