support Python 3.9

Author: obfusk

pythonforandroid/bootstraps/common/build/src/main/java/org/kivy/android/PythonUtil.java

@@ -44,6 +44,7 @@ protected static ArrayList<String> getLibraries(File libsDir) {
         libsList.add("python3.6m");
         libsList.add("python3.7m");
         libsList.add("python3.8");
+        libsList.add("python3.9");
         libsList.add("main");
         return libsList;
     }
@@ -63,7 +64,7 @@ public static void loadLibraries(File filesDir, File libsDir) {
                 // load, and it has failed, give a more
                 // general error
                 Log.v(TAG, "Library loading error: " + e.getMessage());
-                if (lib.startsWith("python3.8") && !foundPython) {
+                if (lib.startsWith("python3.9") && !foundPython) {
                     throw new RuntimeException("Could not load any libpythonXXX.so");
                 } else if (lib.startsWith("python")) {
                     continue;

pythonforandroid/recipes/python3/__init__.py

@@ -67,14 +67,16 @@ class Python3Recipe(TargetPythonRecipe):
         ('patches/py3.7.1_fix-ctypes-util-find-library.patch', version_starts_with("3.7")),
         ('patches/py3.7.1_fix-zlib-version.patch', version_starts_with("3.7")),
 
-        # Python 3.8.1
-        ('patches/py3.8.1.patch', version_starts_with("3.8"))
+        # Python 3.8.1 & 3.9.X
+        ('patches/py3.8.1.patch', version_starts_with("3.8")),
+        ('patches/py3.8.1.patch', version_starts_with("3.9"))
     ]
 
     if sh.which('lld') is not None:
         patches = patches + [
             ("patches/py3.7.1_fix_cortex_a8.patch", version_starts_with("3.7")),
-            ("patches/py3.8.1_fix_cortex_a8.patch", version_starts_with("3.8"))
+            ("patches/py3.8.1_fix_cortex_a8.patch", version_starts_with("3.8")),
+            ("patches/py3.8.1_fix_cortex_a8.patch", version_starts_with("3.9"))
         ]
 
     depends = ['hostpython3', 'sqlite3', 'openssl', 'libffi']