don't use G_VALUE_COLLECT_INIT

ChangeLog

@@ -1,3 +1,7 @@
+10/8/11 started 7.26.3
+- don't use G_VALUE_COLLECT_INIT(), many platforms do not have a glib this
+  recent
+
 10/8/11 started 7.26.2
 - oops, im_benchmark.c had some stuff turned off
 - configure option --without-cfitsio was broken (thanks Mike)

configure.in

@@ -6,7 +6,7 @@ AC_CONFIG_MACRO_DIR(m4)
 # user-visible library versioning
 m4_define([vips_major_version], [7])
 m4_define([vips_minor_version], [26])
-m4_define([vips_micro_version], [2])
+m4_define([vips_micro_version], [3])
 m4_define([vips_version],
           [vips_major_version.vips_minor_version.vips_micro_version])
 
@@ -29,7 +29,7 @@ PACKAGE=vips
 #   interface changes not backwards compatible?: reset age to 0
 
 LIBRARY_CURRENT=30
-LIBRARY_REVISION=1
+LIBRARY_REVISION=2
 LIBRARY_AGE=15
 
 AM_INIT_AUTOMAKE($PACKAGE,$VERSION)

libvips/iofuncs/operation.c

@@ -244,8 +244,12 @@ vips_operation_set_valist_required( VipsOperation *operation, va_list ap )
 			GValue value = { 0 };
 			char *msg = NULL;
 
-			G_VALUE_COLLECT_INIT( &value, 
-				G_PARAM_SPEC_VALUE_TYPE( pspec ), ap, 0, &msg );
+			/* It'd be nice to use G_VALUE_COLLECT_INIT(), but
+			 * that's only available in very recent glib.
+			 */
+			g_value_init( &value, 
+				G_PARAM_SPEC_VALUE_TYPE( pspec ) );
+			G_VALUE_COLLECT( &value, ap, 0, &msg );
 
 			if( msg ) {
 				VipsObjectClass *class = 
@@ -321,9 +325,13 @@ vips_operation_get_valist( VipsOperation *operation, va_list ap )
 
 			/* Collect the arg from valist to eat it up, but don't
 			 * do anything with it.
+			 *
+			 * It'd be nice to use G_VALUE_COLLECT_INIT(), but
+			 * that's only available in very recent glib.
 			 */
-			G_VALUE_COLLECT_INIT( &value, 
-				G_PARAM_SPEC_VALUE_TYPE( pspec ), ap, 0, &msg );
+			g_value_init( &value, 
+				G_PARAM_SPEC_VALUE_TYPE( pspec ) );
+			G_VALUE_COLLECT( &value, ap, 0, &msg );
 			g_value_unset( &value );
 		}
 		else if( (argument_class->flags & VIPS_ARGUMENT_REQUIRED) &&