Move fixed ticket tests to testing directories.

--HG--
rename : tests/bugs/weakref_T276.pyx => tests/compile/weakref_T276.pyx
rename : tests/bugs/c_int_types_T255.pyx => tests/run/c_int_types_T255.pyx

diff --git a/tests/bugs/weakref_T276.pyx b/tests/compile/weakref_T276.pyx
similarity index 100%
rename from tests/bugs/weakref_T276.pyx
rename to tests/compile/weakref_T276.pyx

diff --git a/tests/bugs/c_int_types_T255.pyx b/tests/run/c_int_types_T255.pyx
similarity index 100%
rename from tests/bugs/c_int_types_T255.pyx
rename to tests/run/c_int_types_T255.pyx