Don't use a generic 'unpackaged' version

The behaviour of the script is not really predictable if it is run on the
loose objects of pg_reorg >= 1.1.8. So let's be explicit about what version
we expect as starting point.

lib/.gitignore

@@ -1,4 +1,3 @@
 /.deps/
 /pg_reorg.sql
 /pg_reorg--[0-9.]*.sql
-/pg_reorg--unpackaged--[0-9.]*.sql

lib/Makefile

@@ -17,7 +17,7 @@ EXTVER = $(shell grep -e '^default_version' $(EXTENSION).control \
 
 #supports both EXTENSION (for >=9.1) and without_EXTENSION (for <PG 9.1)
 DATA_built = pg_reorg.sql pg_reorg--$(EXTVER).sql
-DATA = pg_reorg--unpackaged--1.1.8.sql uninstall_pg_reorg.sql
+DATA = pg_reorg--1.1.7--1.1.8.sql uninstall_pg_reorg.sql
 
 ifndef USE_PGXS
 top_builddir = ../../..

lib/pg_reorg--1.1.7--1.1.8.sql

@@ -1,7 +1,7 @@
-/* pg_reorg/pg_reorg--unpackaged--1.1.8.sql */
+/* Create the pg_reorg extension from a loose set of objects */
 
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
-\echo Use "CREATE EXTENSION pg_reorg FROM unpackaged" to load this file. \quit
+\echo Use "CREATE EXTENSION pg_reorg FROM 1.1.7" to load this file. \quit
 
 ALTER EXTENSION pg_reorg ADD FUNCTION reorg.version();
 ALTER EXTENSION pg_reorg ADD AGGREGATE reorg.array_accum(anyelement);