Merge pull request #13 from amigadave/master

Add simple APPDATA_XML m4 macro
trivial: Fix up the example spec file
Add a style rule to require 300 chars of <p> content before <ul>

Otherwise the software center has to show the bullets in the summary view.
Add the trivial PHP file used to validate the file on my server
Release version 0.1.5
trivial: post release version bump
Do not use g_type_init() for newer versions of GLib
Fix up several warnings spotted when building the distro package

...which uses '-Wformat' by default.
Set several warning flags and fix up the trivial issues
Fix the schema install logic

We can't use a test on pythondir/lxml as the former will have a non-expanded prefix in some cases.
Ensure the tarball is always built with schemas enabled
trivial: Fix ChangeLog generation
Release version 0.1.6
trivial: post release version bump
trivial: Add website section about full screen games
Pass --nonet to appdata-validate in appdata-xml.m4

This breaks gnome-continuous, Koji, and probably a variety of other
build systems.