gh-145616: Detect Android sysconfig ABI correctly on 32-bit ARM Android on 64-bit ARM kernel

- When Python is running on 32-bit ARM Android on a 64-bit ARM kernel, `os.uname().machine` is `armv8l`. Such devices run the same userspace code as `armv7l` devices, so apply the same `armeabi_v7a` Android ABI to them, which works.

- Issue: #145616

Author: robertkirkman

Lib/sysconfig/__init__.py

@@ -696,11 +696,15 @@ def get_platform():
         release = get_config_var("ANDROID_API_LEVEL")
 
         # Wheel tags use the ABI names from Android's own tools.
+        # When Python is running on 32-bit ARM Android on a 64-bit ARM kernel,
+        # 'os.uname().machine' is 'armv8l'. Such devices run the same userspace
+        # code as 'armv7l' devices.
         machine = {
             "x86_64": "x86_64",
             "i686": "x86",
             "aarch64": "arm64_v8a",
             "armv7l": "armeabi_v7a",
+            "armv8l": "armeabi_v7a",
         }[machine]
     elif osname == "linux":
         # At least on Linux/Intel, 'machine' is the processor --

Lib/test/test_sysconfig.py

@@ -378,6 +378,7 @@ def test_get_platform(self):
             'i686': 'x86',
             'aarch64': 'arm64_v8a',
             'armv7l': 'armeabi_v7a',
+            'armv8l': 'armeabi_v7a',
         }.items():
             with self.subTest(machine):
                 self._set_uname(('Linux', 'localhost', '3.18.91+',
@@ -586,6 +587,7 @@ def test_android_ext_suffix(self):
             "i686": "i686-linux-android",
             "aarch64": "aarch64-linux-android",
             "armv7l": "arm-linux-androideabi",
+            "armv8l": "arm-linux-androideabi",
         }[machine]
         self.assertEndsWith(suffix, f"-{expected_triplet}.so")