TMI: More of the same!

I fixed the dependency problem, which was trivial to fix:

diff --git a/mk/tests.mk b/mk/tests.mk
index 770e728..c3659e7 100644
--- a/mk/tests.mk
+++ b/mk/tests.mk
@@ -345,7 +345,8 @@ $(3)/stage$(1)/test/rustctest-$(2)$$(X_$(2)):                                       \
 
 $(3)/stage$(1)/test/rustpkgtest-$(2)$$(X_$(2)):                                        \
                $$(RUSTPKG_LIB) $$(RUSTPKG_INPUTS)              \
-               $$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_LIBRUSTC_$(2))
+               $$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_LIBRUSTC_$(2)) \
+               $$(TBIN$(1)_T_$(2)_H_$(3))/rustpkg$$(X_$(2))
        @$$(call E, compile_and_link: $$@)

See, totally trivial! Um. Workcache changes haven't landed yet, so I didn't work on that. Rather, I spent the rest of the day futzing with directories, again, because I haven't done enough of that, as part of making-general-extern-mods work. Admittedly some of that had to do with the above change -- making the test suite able to run rustpkg from the target directory instead of the host directly. (Cross-compilation thing. Makes perfect sense. Yeah.)

Another recompile is running, but it's time to go home.