Brogue v1.7.4

There's no public repository for Brogue, which means I maintain my own where I merge in each source release, which comes as part of each binary Brogue release.

Today I merged in v1.7.4.  It was a pretty straightforward merge, so should be an easy BrogueX release.

The only problem is that my BrogueX repositories are broken because of bad merging, where things have been merged in the wrong direction and I have no idea how to fix it besides throwing all my local repositories away and starting again.  It's strange how I keep doing this.