Rename shelltest files because Cabal doesn't know how globs work. While trying to add my shelltest files to the release tarball, I am informed that the glob syntax within my cabal file is not the same fifty-year-old glob syntax that everyone else uses. This commit renames the test files to not contain more than one period, in order to make Cabal's globbing match them. You are all assholes. A heartfelt fuck-you for making me do this.
test: add a shelltestrunner test suite for the man page examples.