bpo-42519: Replace PyMem_MALLOC() with PyMem_Malloc() (GH-23586)

No longer use deprecated aliases to functions:

* Replace PyMem_MALLOC() with PyMem_Malloc()
* Replace PyMem_REALLOC() with PyMem_Realloc()
* Replace PyMem_FREE() with PyMem_Free()
* Replace PyMem_Del() with PyMem_Free()
* Replace PyMem_DEL() with PyMem_Free()

Modify also the PyMem_DEL() macro to use directly PyMem_Free().
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 1ce55b6..a73b8cb 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -2089,7 +2089,7 @@ builtin_input_impl(PyObject *module, PyObject *prompt)
         Py_DECREF(stdin_encoding);
         Py_DECREF(stdin_errors);
         Py_XDECREF(po);
-        PyMem_FREE(s);
+        PyMem_Free(s);
 
         if (result != NULL) {
             if (PySys_Audit("builtins.input/result", "O", result) < 0) {
diff --git a/Python/getargs.c b/Python/getargs.c
index c85ff6d..8839492 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -202,7 +202,7 @@ static int
 cleanup_ptr(PyObject *self, void *ptr)
 {
     if (ptr) {
-        PyMem_FREE(ptr);
+        PyMem_Free(ptr);
     }
     return 0;
 }
@@ -246,7 +246,7 @@ cleanreturn(int retval, freelist_t *freelist)
       }
     }
     if (freelist->entries_malloced)
-        PyMem_FREE(freelist->entries);
+        PyMem_Free(freelist->entries);
     return retval;
 }
 
diff --git a/Python/marshal.c b/Python/marshal.c
index d292987..fa4ec9e 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -638,7 +638,7 @@ r_string(Py_ssize_t n, RFILE *p)
         return res;
     }
     if (p->buf == NULL) {
-        p->buf = PyMem_MALLOC(n);
+        p->buf = PyMem_Malloc(n);
         if (p->buf == NULL) {
             PyErr_NoMemory();
             return NULL;
@@ -646,7 +646,7 @@ r_string(Py_ssize_t n, RFILE *p)
         p->buf_size = n;
     }
     else if (p->buf_size < n) {
-        char *tmp = PyMem_REALLOC(p->buf, n);
+        char *tmp = PyMem_Realloc(p->buf, n);
         if (tmp == NULL) {
             PyErr_NoMemory();
             return NULL;
@@ -1453,7 +1453,7 @@ PyMarshal_ReadShortFromFile(FILE *fp)
     rf.buf = NULL;
     res = r_short(&rf);
     if (rf.buf != NULL)
-        PyMem_FREE(rf.buf);
+        PyMem_Free(rf.buf);
     return res;
 }
 
@@ -1468,7 +1468,7 @@ PyMarshal_ReadLongFromFile(FILE *fp)
     rf.buf = NULL;
     res = r_long(&rf);
     if (rf.buf != NULL)
-        PyMem_FREE(rf.buf);
+        PyMem_Free(rf.buf);
     return res;
 }
 
@@ -1501,11 +1501,11 @@ PyMarshal_ReadLastObjectFromFile(FILE *fp)
     off_t filesize;
     filesize = getfilesize(fp);
     if (filesize > 0 && filesize <= REASONABLE_FILE_LIMIT) {
-        char* pBuf = (char *)PyMem_MALLOC(filesize);
+        char* pBuf = (char *)PyMem_Malloc(filesize);
         if (pBuf != NULL) {
             size_t n = fread(pBuf, 1, (size_t)filesize, fp);
             PyObject* v = PyMarshal_ReadObjectFromString(pBuf, n);
-            PyMem_FREE(pBuf);
+            PyMem_Free(pBuf);
             return v;
         }
 
@@ -1534,7 +1534,7 @@ PyMarshal_ReadObjectFromFile(FILE *fp)
     result = r_object(&rf);
     Py_DECREF(rf.refs);
     if (rf.buf != NULL)
-        PyMem_FREE(rf.buf);
+        PyMem_Free(rf.buf);
     return result;
 }
 
@@ -1555,7 +1555,7 @@ PyMarshal_ReadObjectFromString(const char *str, Py_ssize_t len)
     result = r_object(&rf);
     Py_DECREF(rf.refs);
     if (rf.buf != NULL)
-        PyMem_FREE(rf.buf);
+        PyMem_Free(rf.buf);
     return result;
 }
 
@@ -1684,7 +1684,7 @@ marshal_load(PyObject *module, PyObject *file)
             result = read_object(&rf);
             Py_DECREF(rf.refs);
             if (rf.buf != NULL)
-                PyMem_FREE(rf.buf);
+                PyMem_Free(rf.buf);
         } else
             result = NULL;
     }
diff --git a/Python/pystrtod.c b/Python/pystrtod.c
index 1c8202c..9145d4e 100644
--- a/Python/pystrtod.c
+++ b/Python/pystrtod.c
@@ -255,7 +255,7 @@ _PyOS_ascii_strtod(const char *nptr, char **endptr)
         char *copy, *c;
         /* Create a copy of the input, with the '.' converted to the
            locale-specific decimal point */
-        copy = (char *)PyMem_MALLOC(end - digits_pos +
+        copy = (char *)PyMem_Malloc(end - digits_pos +
                                     1 + decimal_point_len);
         if (copy == NULL) {
             *endptr = (char *)nptr;
@@ -286,7 +286,7 @@ _PyOS_ascii_strtod(const char *nptr, char **endptr)
                     (fail_pos - copy);
         }
 
-        PyMem_FREE(copy);
+        PyMem_Free(copy);
 
     }
     else {
diff --git a/Python/traceback.c b/Python/traceback.c
index 99b63af..708678f 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -419,12 +419,12 @@ _Py_DisplaySourceLine(PyObject *f, PyObject *filename, int lineno, int indent)
     if (lseek(fd, 0, SEEK_SET) == (off_t)-1) {
         Py_DECREF(io);
         Py_DECREF(binary);
-        PyMem_FREE(found_encoding);
+        PyMem_Free(found_encoding);
         return 0;
     }
     fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding);
     Py_DECREF(io);
-    PyMem_FREE(found_encoding);
+    PyMem_Free(found_encoding);
 
     if (fob == NULL) {
         PyErr_Clear();