Add support for python 3.12 and raise minimum required version to 3.4.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

sip/tqt/tqbytearray.sip

@@ -196,11 +196,7 @@ public:
 		Py_BEGIN_ALLOW_THREADS
 		TQByteArray *ba = new TQByteArray();
 
-#if PY_VERSION_HEX >= 0x03030000
-		ba -> duplicate((char *)PyUnicode_1BYTE_DATA(sipPy),PyUnicode_GET_SIZE(sipPy));
-#else
-		ba -> duplicate((char *)PyUnicode_AS_DATA(sipPy),PyUnicode_GET_SIZE(sipPy));
-#endif
+		ba -> duplicate((char *)PyUnicode_1BYTE_DATA(sipPy),(uint)PyUnicode_GET_LENGTH(sipPy));
 		*sipCppPtr = ba;
 		Py_END_ALLOW_THREADS
 

sip/tqt/tqobject.sip

@@ -787,9 +787,7 @@ PyTypeObject pytqtWrapperType_Type = {
     0,                      /* tp_weaklist */
     0,                      /* tp_del */
     0,                      /* tp_version_tag */
-#if PY_VERSION_HEX >= 0x03040000
     0,                      /* tp_finalize */
-#endif
 #if PY_VERSION_HEX >= 0x03080000
     0,                      /* tp_vectorcall */
 #endif
@@ -1005,9 +1003,7 @@ static sipWrapperType pytqtWrapper_Type = {
             0,              /* tp_weaklist */
             0,              /* tp_del */
             0,              /* tp_version_tag */
-#if PY_VERSION_HEX >= 0x03040000
             0,              /* tp_finalize */
-#endif
 #if PY_VERSION_HEX >= 0x03080000
             0,              /* tp_vectorcall */
 #endif

sip/tqt/tqstring.sip

@@ -752,7 +752,6 @@ PyObject *PyTQt_tqt_PyObject_FromTQString(const TQString *tqstr)
 {
     PyObject *obj;
 
-#if PY_VERSION_HEX >= 0x03030000
     // We have to work out exactly which kind to use.  We assume ASCII while we
     // are checking so that we only go through the string once in the most
     // common case.  Note that we can't use PyUnicode_FromKindAndData() because
@@ -787,24 +786,6 @@ PyObject *PyTQt_tqt_PyObject_FromTQString(const TQString *tqstr)
         Py_UCS4 uch = tqstr->at(tqt_i).unicode();
         PyUnicode_WRITE(kind, data, tqt_i, uch);
     }
-#elif defined(Py_UNICODE_WIDE)
-    // Note that this doesn't handle code points greater than 0xffff.  It could
-    // but it's only an issue for old versions of TQt.
-
-    if ((obj = PyUnicode_FromUnicode(NULL, tqstr->length())) == NULL)
-        return NULL;
-
-    Py_UNICODE *pyu = PyUnicode_AS_UNICODE(obj);
-
-    for (unsigned int i = 0; i < tqstr->length(); ++i)
-        *pyu++ = (tqstr->at(i)).unicode();
-#else
-    if ((obj = PyUnicode_FromUnicode(NULL, tqstr->length())) == NULL)
-        return NULL;
-
-    memcpy(PyUnicode_AS_UNICODE(obj), tqstr->ucs2(),
-            tqstr->length() * sizeof (Py_UNICODE));
-#endif
 
     return obj;
 }
@@ -821,7 +802,6 @@ TQString *PyTQt_tqt_PyObject_AsTQString(PyObject *obj)
 {
     if (PyUnicode_Check(obj))
     {
-#if PY_VERSION_HEX >= 0x03030000
         SIP_SSIZE_T len = PyUnicode_GET_LENGTH(obj);
 
         switch (PyUnicode_KIND(obj))
@@ -848,21 +828,6 @@ TQString *PyTQt_tqt_PyObject_AsTQString(PyObject *obj)
         }
 
         return NULL;
-#else
-        TQString *tqstr = new TQString;
-
-# ifdef Py_UNICODE_WIDE
-        Py_UNICODE *ucode = PyUnicode_AS_UNICODE(obj);
-        SIP_SSIZE_T len = PyUnicode_GET_SIZE(obj);
-
-        for (SIP_SSIZE_T i = 0; i < len; ++i)
-            tqstr->append(TQChar((uint)ucode[i]));
-# else
-        tqstr->setUnicodeCodes((ushort *)PyUnicode_AS_UNICODE(obj),PyUnicode_GET_SIZE(obj));
-# endif
-
-        return tqstr;
-#endif
     }
     else if (PyBytes_Check(obj))
     {