moved working bug test case to tests/run/

--HG--
rename : tests/bugs/empty_for_loop_T208.pyx => tests/run/empty_for_loop_T208.pyx

diff --git a/tests/bugs/empty_for_loop_T208.pyx b/tests/run/empty_for_loop_T208.pyx
similarity index 100%
rename from tests/bugs/empty_for_loop_T208.pyx
rename to tests/run/empty_for_loop_T208.pyx