Ports: Update Python to 3.10.0rc1

Released on 2021-08-02.
https://www.python.org/downloads/release/python-3100rc1/

This contains the first upstreamed change for SerenityOS, making the
webbrowser module work with Browser out of the box :^)

Ports/python3/patches/tweak-setup-py.patch

@@ -1,6 +1,6 @@
---- Python-3.9.6/setup.py.orig	2021-07-10 00:09:56.322423573 +0100
-+++ Python-3.9.6/setup.py	2021-07-10 00:13:39.447453427 +0100
-@@ -750,8 +750,8 @@
+--- Python-3.10.0rc1/setup.py	2021-08-03 18:59:05.650000000 +0100
++++ Python-3.10.0rc1/setup.py	2021-08-03 19:00:23.210495643 +0100
+@@ -832,8 +832,8 @@
              add_dir_to_list(self.compiler.include_dirs,
                              sysconfig.get_config_var("INCLUDEDIR"))
  
@@ -11,7 +11,7 @@
          # lib_dirs and inc_dirs are used to search for files;
          # if a file is found in one of those directories, it can
          # be assumed that no additional -I,-L directives are needed.
-@@ -1052,7 +1052,12 @@
+@@ -1144,7 +1144,12 @@
          # Curses support, requiring the System V version of curses, often
          # provided by the ncurses library.
          curses_defines = []