Move native extension inside module

_icu.cpp

@@ -270,7 +270,7 @@ static PyObject *PyInit_icu(PyObject *m)
 /* TODO: Properly implement http://www.python.org/dev/peps/pep-3121/ */
 static struct PyModuleDef moduledef = {
     PyModuleDef_HEAD_INIT,
-    /* m_name    */ "_icu",
+    /* m_name    */ "icu._icu",
     /* m_doc     */ "PyICU extension module",
     /* m_size    */ -1,
     /* m_methods */ _icu_funcs,
@@ -289,7 +289,7 @@ extern "C" {
 extern "C" {
     void init_icu(void)
     {
-        PyObject *m = Py_InitModule3("_icu", _icu_funcs, "_icu");
+        PyObject *m = Py_InitModule3("icu._icu", _icu_funcs, "icu._icu");
         PyInit_icu(m);
     }
 }

icu/__init__.py

@@ -34,4 +34,4 @@ class InvalidArgsError(Exception):
     pass
 
 
-from _icu import *
+from icu._icu import *

setup.py

@@ -254,7 +254,7 @@ def sorted(iterable, *args, **kwargs):
           'Programming Language :: Python :: Implementation :: PyPy',
           'Topic :: Software Development :: Localization',
           'Topic :: Software Development :: Internationalization'],
-      ext_modules=[Extension('_icu',
+      ext_modules=[Extension('icu._icu',
                              [filename for filename in sorted(os.listdir(os.curdir))
                               if filename.endswith('.cpp')],
                              include_dirs=_includes,