Ports/python3: Update Python to 3.11.0

This now requires `--host` and `--with-build-python` to be passed to the
configure script when cross compiling; the former we simply do like in
many other package.sh scripts as well, the latter we point to `python3`,
which is expected to match the port's version anyway.

Ports/python3/patches/0004-Tweak-setup.py.patch

@@ -17,10 +17,10 @@ Make some tweaks to Python's `setup.py`:
  1 file changed, 8 insertions(+), 3 deletions(-)
 
 diff --git a/setup.py b/setup.py
-index e74a275..acd7b05 100644
+index 15d0d4576a4772e9920ac2d7c1a9dee75c29b341..e651ac7627e8b796f8b9b4d60f592bc9261b6540 100644
 --- a/setup.py
 +++ b/setup.py
-@@ -848,8 +848,8 @@ class PyBuildExt(build_ext):
+@@ -868,8 +868,8 @@ class PyBuildExt(build_ext):
              add_dir_to_list(self.compiler.include_dirs,
                              sysconfig.get_config_var("INCLUDEDIR"))
  
@@ -31,7 +31,7 @@ index e74a275..acd7b05 100644
          # 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.
-@@ -1160,7 +1160,12 @@ class PyBuildExt(build_ext):
+@@ -1117,7 +1117,12 @@ class PyBuildExt(build_ext):
          # Curses support, requiring the System V version of curses, often
          # provided by the ncurses library.
          curses_defines = []