Replace deprecated PySlice_GetIndicesEx and PY_LONG_LONG

src/_imaging.c

@@ -594,7 +594,7 @@ getink(PyObject *color, Imaging im, char *ink) {
        Python long (not int) that raises an overflow error when trying
        to return it into a 32 bit C long
     */
-    PY_LONG_LONG r = 0;
+    long long r = 0;
     FLOAT32 ftmp;
     INT32 itmp;
 

src/_imagingft.c

@@ -840,7 +840,7 @@ font_render_impl(FontObject *self, PyObject *args) {
     int color = 0; /* is FT_LOAD_COLOR enabled? */
     float stroke_width = 0;
     int stroke_filled = 0;
-    PY_LONG_LONG foreground_ink_long = 0;
+    long long foreground_ink_long = 0;
     unsigned int foreground_ink;
     const char *mode_name = NULL;
     const char *dir = NULL;

src/decode.c

@@ -934,7 +934,7 @@ PyImaging_Jpeg2KDecoderNew(PyObject *self, PyObject *args) {
     int reduce = 0;
     int layers = 0;
     int fd = -1;
-    PY_LONG_LONG length = -1;
+    long long length = -1;
 
     if (!PyArg_ParseTuple(
             args, "ss|iiiL", &mode, &format, &reduce, &layers, &fd, &length

src/path.c

@@ -614,9 +614,10 @@ path_subscript(PyPathObject *self, PyObject *item) {
         int len = self->count;
         Py_ssize_t start, stop, step, slicelength;
 
-        if (PySlice_GetIndicesEx(item, len, &start, &stop, &step, &slicelength) < 0) {
+        if (PySlice_Unpack(item, &start, &stop, &step) < 0) {
             return NULL;
         }
+        slicelength = PySlice_AdjustIndices(len, &start, &stop, step);
 
         if (slicelength <= 0) {
             double *xy = alloc_array(0);