py-Pillow: add py313 subport

This includes a backport of
python-pillow/Pillow#8050
(python-pillow/Pillow@57399ce)
from Pillow 10.4.0, necessary for Python 3.13 compatibility. See
python/cpython#118888.

Author: markmentovai

python/py-Pillow/Portfile

@@ -9,7 +9,7 @@ revision            1
 categories-append   devel
 license             BSD
 
-python.versions     27 37 38 39 310 311 312
+python.versions     27 37 38 39 310 311 312 313
 python.pep517       no
 
 maintainers         {stromnov @stromnov} openmaintainer

python/py-Pillow/files/patch-setup.py.diff

@@ -1,6 +1,18 @@
---- setup.py.orig	2021-10-15 09:26:23.000000000 +0300
-+++ setup.py	2021-10-16 16:06:42.000000000 +0300
-@@ -510,52 +510,9 @@ class pil_build_ext(build_ext):
+diff --git setup.py setup.py
+index 07d6c66d655e..a77263ef2900 100755
+--- setup.py
++++ setup.py
+@@ -22,8 +22,7 @@ from setuptools.command.build_ext import build_ext
+ def get_version():
+     version_file = "src/PIL/_version.py"
+     with open(version_file, encoding="utf-8") as f:
+-        exec(compile(f.read(), version_file, "exec"))
+-    return locals()["__version__"]
++        return f.read().split('"')[1]
+ 
+ 
+ PILLOW_VERSION = get_version()
+@@ -517,52 +516,9 @@ class pil_build_ext(build_ext):
              )
 
          elif sys.platform == "darwin":
@@ -54,4 +66,4 @@
 +            _add_directory(include_dirs, "@prefix@/include")
          elif (
              sys.platform.startswith("linux")
-             or sys.platform.startswith("gnu")
+             or sys.platform.startswith("gnu")