Increment version patch number up to 1.4.2

An extra change is introduced as well: generate empty upgrade scripts
without the need to create *.sql.in files in upgrade_script
subdirectory.

Makefile

@@ -34,6 +34,7 @@ DATA_built  = $(RELEASE_SQL) \
 			  pg_sphere--1.3.0--1.3.1.sql \
 			  pg_sphere--1.3.1--1.4.0.sql \
 			  pg_sphere--1.4.0--1.4.1.sql \
+			  pg_sphere--1.4.1--1.4.2.sql
 
 DOCS        = README.pg_sphere COPYRIGHT.pg_sphere
 TESTS       = version tables points euler circle line ellipse poly path box \
@@ -205,8 +206,8 @@ endif
 pg_sphere--1.3.1--1.4.0.sql: pgs_circle_sel.sql.in pgs_hash.sql.in
 	cat upgrade_scripts/$@.in $^ > $@
 
-pg_sphere--1.4.0--1.4.1.sql:
-	cat upgrade_scripts/$@.in $^ > $@
+pg_sphere--1.4.0--1.4.1.sql pg_sphere--1.4.1--1.4.2.sql:
+	@echo "-- Nothing to upgrade in the schema" > $@
 
 # end of local stuff
 

Makefile.common.mk

@@ -5,4 +5,4 @@
 #----------------------------------------------------------------------------
 
 EXTENSION        	:= pg_sphere
-PGSPHERE_VERSION 	:= 1.4.1
+PGSPHERE_VERSION 	:= 1.4.2

pg_sphere.control

@@ -1,5 +1,5 @@
 # pg_sphere extension
 comment = 'spherical objects with useful functions, operators and index support'
-default_version = '1.4.1'
+default_version = '1.4.2'
 module_pathname = '$libdir/pg_sphere'
 relocatable = true