more fixes to get testcases work, includes module init and other minor fixes

[SVN r53285]

src/exec.cpp

@@ -38,11 +38,19 @@ object BOOST_PYTHON_DECL exec_file(str filename, object global, object local)
 {
   // should be 'char const *' but older python versions don't use 'const' yet.
   char *f = python::extract<char *>(filename);
+#if PY_VERSION_HEX >= 0x03000000
+  // TODO(bhy) temporary workaround for Python 3.
+  // should figure out a way to avoid binary incompatibilities as the Python 2
+  // version did.
+  FILE *fs = fopen(f, "r");
+#else
   // Let python open the file to avoid potential binary incompatibilities.
   PyObject *pyfile = PyFile_FromString(f, const_cast<char*>("r"));
   if (!pyfile) throw std::invalid_argument(std::string(f) + " : no such file");
   python::handle<> file(pyfile);
-  PyObject* result = PyRun_File(PyFile_AsFile(file.get()),
+  FILE *fs = PyFile_AsFile(file.get());
+#endif
+  PyObject* result = PyRun_File(fs,
                 f,
                 Py_file_input,
                 global.ptr(), local.ptr());

src/object_operators.cpp

@@ -38,7 +38,11 @@ BOOST_PYTHON_DECL object operator op(object const& l, object const& r)  \
 BOOST_PYTHON_BINARY_OPERATOR(+, Add)
 BOOST_PYTHON_BINARY_OPERATOR(-, Subtract)
 BOOST_PYTHON_BINARY_OPERATOR(*, Multiply)
+#if PY_VERSION_HEX >= 0x03000000
+BOOST_PYTHON_BINARY_OPERATOR(/, TrueDivide)
+#else
 BOOST_PYTHON_BINARY_OPERATOR(/, Divide)
+#endif
 BOOST_PYTHON_BINARY_OPERATOR(%, Remainder)
 BOOST_PYTHON_BINARY_OPERATOR(<<, Lshift)
 BOOST_PYTHON_BINARY_OPERATOR(>>, Rshift)
@@ -58,7 +62,11 @@ BOOST_PYTHON_DECL object& operator op##=(object& l, object const& r)    \
 BOOST_PYTHON_INPLACE_OPERATOR(+, Add)
 BOOST_PYTHON_INPLACE_OPERATOR(-, Subtract)
 BOOST_PYTHON_INPLACE_OPERATOR(*, Multiply)
+#if PY_VERSION_HEX >= 0x03000000
+BOOST_PYTHON_INPLACE_OPERATOR(/, TrueDivide)
+#else
 BOOST_PYTHON_INPLACE_OPERATOR(/, Divide)
+#endif
 BOOST_PYTHON_INPLACE_OPERATOR(%, Remainder)
 BOOST_PYTHON_INPLACE_OPERATOR(<<, Lshift)
 BOOST_PYTHON_INPLACE_OPERATOR(>>, Rshift)

src/object_protocol.cpp

@@ -103,6 +103,7 @@ namespace // slicing code copied directly out of the Python implementation
   static PyObject *
   apply_slice(PyObject *u, PyObject *v, PyObject *w) /* return u[v:w] */
   {
+#if PY_VERSION_HEX < 0x03000000
       PyTypeObject *tp = u->ob_type;
       PySequenceMethods *sq = tp->tp_as_sequence;
 
@@ -114,7 +115,9 @@ namespace // slicing code copied directly out of the Python implementation
               return NULL;
           return PySequence_GetSlice(u, ilow, ihigh);
       }
-      else {
+      else 
+#endif
+      {
           PyObject *slice = PySlice_New(v, w, NULL);
           if (slice != NULL) {
               PyObject *res = PyObject_GetItem(u, slice);
@@ -130,6 +133,7 @@ namespace // slicing code copied directly out of the Python implementation
   assign_slice(PyObject *u, PyObject *v, PyObject *w, PyObject *x)
       /* u[v:w] = x */
   {
+#if PY_VERSION_HEX < 0x03000000
       PyTypeObject *tp = u->ob_type;
       PySequenceMethods *sq = tp->tp_as_sequence;
 
@@ -144,7 +148,9 @@ namespace // slicing code copied directly out of the Python implementation
           else
               return PySequence_SetSlice(u, ilow, ihigh, x);
       }
-      else {
+      else 
+#endif
+      {
           PyObject *slice = PySlice_New(v, w, NULL);
           if (slice != NULL) {
               int res;