Small fixes (upgrade Vala)

test/plugins/typeA/typeA1/TypeA1.vala

@@ -31,6 +31,6 @@ public class TypeA1 : PluginTypeA {
 }
 
 [ModuleInit]
-Type plugin_init (GLib.TypeModule type_module) {
+public Type plugin_init (GLib.TypeModule type_module) {
 	return typeof (TypeA1);
 }

test/plugins/typeA/typeA2/TypeA2.vala

@@ -28,6 +28,6 @@ public class TypeA2 : PluginTypeA {
 }
 
 [ModuleInit]
-Type plugin_init (GLib.TypeModule type_module) {
+public Type plugin_init (GLib.TypeModule type_module) {
 	return typeof (TypeA2);
 }

test/plugins/typeB/typeB1/TypeB1.vala

@@ -29,6 +29,6 @@ public class TypeB1 : PluginTypeB {
 }
 
 [ModuleInit]
-Type plugin_init (GLib.TypeModule type_module) {
+public Type plugin_init (GLib.TypeModule type_module) {
 	return typeof (TypeB1);
 }

test/plugins/typeB/typeB2/TypeB2.vala

@@ -29,6 +29,6 @@ public class TypeB2 : PluginTypeB {
 }
 
 [ModuleInit]
-Type plugin_init (GLib.TypeModule type_module) {
+public Type plugin_init (GLib.TypeModule type_module) {
 	return typeof (TypeB2);
 }