Tests: Establish root Tests directory, move Userland/Tests there

With the goal of centralizing all tests in the system, this is a
first step to establish a Tests sub-tree. It will contain all of
the unit tests and test harnesses for the various components in the
system.

Tests/UserspaceEmulator/CMakeLists.txt

@@ -0,0 +1,9 @@
+file(GLOB CMD_SOURCES  CONFIGURE_DEPENDS "*.cpp")
+
+# FIXME: These tests do not use LibTest
+foreach(CMD_SRC ${CMD_SOURCES})
+    get_filename_component(CMD_NAME ${CMD_SRC} NAME_WE)
+    add_executable(${CMD_NAME} ${CMD_SRC})
+    target_link_libraries(${CMD_NAME} LibCore)
+    install(TARGETS ${CMD_NAME} RUNTIME DESTINATION usr/Tests/UserEmulator)
+endforeach()