rigg 1.1

This update contains some minor fixes for use in OpenBSD ports, as well as a new CLI flag.

• Use $HOME in test/MonoInvisible.cs instead of /home. This makes more sense with how PORTHOME works int he ports tree.
• Stop using PREFIX variable for BINDIR and MANDIR, using just /usr/local instead. This fixes the installation in the port.
• Add -l flag which lists supported engine binaries.

EDIT: Tarball updated immediately after release to remove the .git* files that make the tarball unnecessarily large.