make sure demos freeze at the start, instead of reading everything out of the file while we're still loading content.
added a couple of lame 'list' commands.
added 'in' command.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4928 fc73d0e0-1445-4013-8a0c-d673dee63da5
