More cleanup.

diff --git a/foo b/tests/foo
similarity index 100%
rename from foo
rename to tests/foo

diff --git a/foo2 b/tests/foo2
similarity index 100%
rename from foo2
rename to tests/foo2

diff --git a/foo3 b/tests/foo3
similarity index 100%
rename from foo3
rename to tests/foo3

diff --git a/foo4 b/tests/foo4
similarity index 100%
rename from foo4
rename to tests/foo4

diff --git a/recurse b/tests/recurse
similarity index 100%
rename from recurse
rename to tests/recurse