Multiple experimental updates

In the latest experimental builds, there is now a custom icon on the EXEs (and should be for the OS X builds, but I believe that system is broken and I can't fix it without access to a Mac), sounds, a few new SCPs and events, as well as bug fixes.

And wow, that's pretty much it. Still working on a few balance updates and a bunch of content before releasing 0.10.0 proper.