postmarketos-demos: Add shutdown button (#516)

aports/main/postmarketos-demos/APKBUILD

 pkgname=postmarketos-demos
 pkgver=4
-pkgrel=3
+pkgrel=4
 pkgdesc="Simple touch menu for a few demo programs"
 url="https://github.com/postmarketOS"
 arch="all"
@@ -20,5 +20,5 @@ package() {
 	install -D -m755 "$srcdir"/postmarketos-demos \
 		"$pkgdir"/usr/bin/postmarketos-demos || return 1
 }
-sha512sums="7cb25e4d6a0224800703d0ee138edbf1b4ab71120190445d1fa57bec0835a9ab0b37fb343a4f6e01de3e3c7ffc2fc5c0c9bbcb15f9e867a9f9014ed682a10275  main.c
+sha512sums="ae51469e6105dfd07e1ffb2ab3b6e2261239ca80b6e897951e7223cc8dd8fcb7c98f06f2e3870203a2f840ce4b5d425b4943ae0091631bbf48ae283d3cf1f86a  main.c
 83d8a95e9e1e95dffa8661e547444e83e72e572dcd0c637376f678bbd20a351c4b971a315311edefeb58a4cca14fd3e586fb581a262b2d217e25092459539b98  Makefile"

aports/main/postmarketos-demos/main.c

@@ -31,7 +31,9 @@ static void activate(GtkApplication *app, gpointer user_data)
 		"GTK3 Demo",
 			"gtk3-demo &",
 		"Restart Weston",
-			"killall weston &"
+			"killall weston &",
+		"Shutdown",
+			"poweroff &"
 	};
 
 	for(int i=0;i<(sizeof(programs) / sizeof(const char*));i+=2)
@@ -40,7 +42,7 @@ static void activate(GtkApplication *app, gpointer user_data)
 		const char *command = programs[i+1];
 
 		GtkWidget *button = gtk_button_new_with_label(title);
-		gtk_widget_set_size_request(button, 200, 80);
+		gtk_widget_set_size_request(button, 200, 70);
 		g_signal_connect(button, "clicked", G_CALLBACK (onclick),
 				(void*)command);
 		gtk_container_add(GTK_CONTAINER(button_box), button);